diff --git a/homeassistant/components/rainmachine/binary_sensor.py b/homeassistant/components/rainmachine/binary_sensor.py
index f0cbfd636fa..930139acf60 100644
--- a/homeassistant/components/rainmachine/binary_sensor.py
+++ b/homeassistant/components/rainmachine/binary_sensor.py
@@ -13,10 +13,7 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from . import RainMachineData, RainMachineEntity
 from .const import DATA_PROVISION_SETTINGS, DATA_RESTRICTIONS_CURRENT, DOMAIN
-from .model import (
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinDataKey,
-)
+from .model import RainMachineEntityDescription
 from .util import (
     EntityDomainReplacementStrategy,
     async_finish_entity_domain_replacements,
@@ -32,14 +29,14 @@ TYPE_RAINSENSOR = "rainsensor"
 TYPE_WEEKDAY = "weekday"
 
 
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class RainMachineBinarySensorDescription(
-    BinarySensorEntityDescription,
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinDataKey,
+    BinarySensorEntityDescription, RainMachineEntityDescription
 ):
     """Describe a RainMachine binary sensor."""
 
+    data_key: str
+
 
 BINARY_SENSOR_DESCRIPTIONS = (
     RainMachineBinarySensorDescription(
diff --git a/homeassistant/components/rainmachine/button.py b/homeassistant/components/rainmachine/button.py
index a13d2069007..6309d9777a1 100644
--- a/homeassistant/components/rainmachine/button.py
+++ b/homeassistant/components/rainmachine/button.py
@@ -24,21 +24,14 @@ from .const import DATA_PROVISION_SETTINGS, DOMAIN
 from .model import RainMachineEntityDescription
 
 
-@dataclass(frozen=True)
-class RainMachineButtonDescriptionMixin:
-    """Define an entity description mixin for RainMachine buttons."""
-
-    push_action: Callable[[Controller], Awaitable]
-
-
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class RainMachineButtonDescription(
-    ButtonEntityDescription,
-    RainMachineEntityDescription,
-    RainMachineButtonDescriptionMixin,
+    ButtonEntityDescription, RainMachineEntityDescription
 ):
     """Describe a RainMachine button description."""
 
+    push_action: Callable[[Controller], Awaitable]
+
 
 BUTTON_KIND_REBOOT = "reboot"
 
diff --git a/homeassistant/components/rainmachine/model.py b/homeassistant/components/rainmachine/model.py
index e45448c0fe4..e7f166b67dd 100644
--- a/homeassistant/components/rainmachine/model.py
+++ b/homeassistant/components/rainmachine/model.py
@@ -4,29 +4,8 @@ from dataclasses import dataclass
 from homeassistant.helpers.entity import EntityDescription
 
 
-@dataclass(frozen=True)
-class RainMachineEntityDescriptionMixinApiCategory:
-    """Define an entity description mixin to include an API category."""
+@dataclass(frozen=True, kw_only=True)
+class RainMachineEntityDescription(EntityDescription):
+    """Describe a RainMachine entity."""
 
     api_category: str
-
-
-@dataclass(frozen=True)
-class RainMachineEntityDescriptionMixinDataKey:
-    """Define an entity description mixin to include a data payload key."""
-
-    data_key: str
-
-
-@dataclass(frozen=True)
-class RainMachineEntityDescriptionMixinUid:
-    """Define an entity description mixin to include an activity UID."""
-
-    uid: int
-
-
-@dataclass(frozen=True)
-class RainMachineEntityDescription(
-    EntityDescription, RainMachineEntityDescriptionMixinApiCategory
-):
-    """Describe a RainMachine entity."""
diff --git a/homeassistant/components/rainmachine/select.py b/homeassistant/components/rainmachine/select.py
index 513c02ddc19..893c1afa8da 100644
--- a/homeassistant/components/rainmachine/select.py
+++ b/homeassistant/components/rainmachine/select.py
@@ -15,21 +15,18 @@ from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM, UnitSystem
 
 from . import RainMachineData, RainMachineEntity
 from .const import DATA_RESTRICTIONS_UNIVERSAL, DOMAIN
-from .model import (
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinDataKey,
-)
+from .model import RainMachineEntityDescription
 from .util import key_exists
 
 
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class RainMachineSelectDescription(
-    SelectEntityDescription,
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinDataKey,
+    SelectEntityDescription, RainMachineEntityDescription
 ):
     """Describe a generic RainMachine select."""
 
+    data_key: str
+
 
 @dataclass
 class FreezeProtectionSelectOption:
@@ -40,20 +37,13 @@ class FreezeProtectionSelectOption:
     metric_label: str
 
 
-@dataclass(frozen=True)
-class FreezeProtectionTemperatureMixin:
-    """Define an entity description mixin to include an options list."""
+@dataclass(frozen=True, kw_only=True)
+class FreezeProtectionSelectDescription(RainMachineSelectDescription):
+    """Describe a freeze protection temperature select."""
 
     extended_options: list[FreezeProtectionSelectOption]
 
 
-@dataclass(frozen=True)
-class FreezeProtectionSelectDescription(
-    RainMachineSelectDescription, FreezeProtectionTemperatureMixin
-):
-    """Describe a freeze protection temperature select."""
-
-
 TYPE_FREEZE_PROTECTION_TEMPERATURE = "freeze_protection_temperature"
 
 SELECT_DESCRIPTIONS = (
diff --git a/homeassistant/components/rainmachine/sensor.py b/homeassistant/components/rainmachine/sensor.py
index 624deeb46c6..ed9b8cc0142 100644
--- a/homeassistant/components/rainmachine/sensor.py
+++ b/homeassistant/components/rainmachine/sensor.py
@@ -21,11 +21,7 @@ from homeassistant.util.dt import utc_from_timestamp, utcnow
 
 from . import RainMachineData, RainMachineEntity
 from .const import DATA_PROGRAMS, DATA_PROVISION_SETTINGS, DATA_ZONES, DOMAIN
-from .model import (
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinDataKey,
-    RainMachineEntityDescriptionMixinUid,
-)
+from .model import RainMachineEntityDescription
 from .util import (
     RUN_STATE_MAP,
     EntityDomainReplacementStrategy,
@@ -48,23 +44,23 @@ TYPE_RAIN_SENSOR_RAIN_START = "rain_sensor_rain_start"
 TYPE_ZONE_RUN_COMPLETION_TIME = "zone_run_completion_time"
 
 
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class RainMachineSensorDataDescription(
-    SensorEntityDescription,
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinDataKey,
+    SensorEntityDescription, RainMachineEntityDescription
 ):
     """Describe a RainMachine sensor."""
 
+    data_key: str
 
-@dataclass(frozen=True)
+
+@dataclass(frozen=True, kw_only=True)
 class RainMachineSensorCompletionTimerDescription(
-    SensorEntityDescription,
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinUid,
+    SensorEntityDescription, RainMachineEntityDescription
 ):
     """Describe a RainMachine completion timer sensor."""
 
+    uid: int
+
 
 SENSOR_DESCRIPTIONS = (
     RainMachineSensorDataDescription(
diff --git a/homeassistant/components/rainmachine/switch.py b/homeassistant/components/rainmachine/switch.py
index b47396bc9e5..8450cb7d5e6 100644
--- a/homeassistant/components/rainmachine/switch.py
+++ b/homeassistant/components/rainmachine/switch.py
@@ -31,11 +31,7 @@ from .const import (
     DEFAULT_ZONE_RUN,
     DOMAIN,
 )
-from .model import (
-    RainMachineEntityDescription,
-    RainMachineEntityDescriptionMixinDataKey,
-    RainMachineEntityDescriptionMixinUid,
-)
+from .model import RainMachineEntityDescription
 from .util import RUN_STATE_MAP, key_exists
 
 ATTR_AREA = "area"
@@ -134,27 +130,26 @@ def raise_on_request_error(
     return decorator
 
 
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class RainMachineSwitchDescription(
-    SwitchEntityDescription,
-    RainMachineEntityDescription,
+    SwitchEntityDescription, RainMachineEntityDescription
 ):
     """Describe a RainMachine switch."""
 
 
-@dataclass(frozen=True)
-class RainMachineActivitySwitchDescription(
-    RainMachineSwitchDescription, RainMachineEntityDescriptionMixinUid
-):
+@dataclass(frozen=True, kw_only=True)
+class RainMachineActivitySwitchDescription(RainMachineSwitchDescription):
     """Describe a RainMachine activity (program/zone) switch."""
 
+    uid: int
 
-@dataclass(frozen=True)
-class RainMachineRestrictionSwitchDescription(
-    RainMachineSwitchDescription, RainMachineEntityDescriptionMixinDataKey
-):
+
+@dataclass(frozen=True, kw_only=True)
+class RainMachineRestrictionSwitchDescription(RainMachineSwitchDescription):
     """Describe a RainMachine restriction switch."""
 
+    data_key: str
+
 
 TYPE_RESTRICTIONS_FREEZE_PROTECT_ENABLED = "freeze_protect_enabled"
 TYPE_RESTRICTIONS_HOT_DAYS_EXTRA_WATERING = "hot_days_extra_watering"