diff --git a/homeassistant/components/elgato/button.py b/homeassistant/components/elgato/button.py
index b05cd532c16..7a69db24012 100644
--- a/homeassistant/components/elgato/button.py
+++ b/homeassistant/components/elgato/button.py
@@ -23,20 +23,13 @@ from .coordinator import ElgatoDataUpdateCoordinator
 from .entity import ElgatoEntity
 
 
-@dataclass
-class ElgatoButtonEntityDescriptionMixin:
-    """Mixin values for Elgato entities."""
+@dataclass(kw_only=True)
+class ElgatoButtonEntityDescription(ButtonEntityDescription):
+    """Class describing Elgato button entities."""
 
     press_fn: Callable[[Elgato], Awaitable[Any]]
 
 
-@dataclass
-class ElgatoButtonEntityDescription(
-    ButtonEntityDescription, ElgatoButtonEntityDescriptionMixin
-):
-    """Class describing Elgato button entities."""
-
-
 BUTTONS = [
     ElgatoButtonEntityDescription(
         key="identify",
diff --git a/homeassistant/components/elgato/sensor.py b/homeassistant/components/elgato/sensor.py
index 8ed8265705c..27dedee25c9 100644
--- a/homeassistant/components/elgato/sensor.py
+++ b/homeassistant/components/elgato/sensor.py
@@ -26,20 +26,12 @@ from .coordinator import ElgatoData, ElgatoDataUpdateCoordinator
 from .entity import ElgatoEntity
 
 
-@dataclass
-class ElgatoEntityDescriptionMixin:
-    """Mixin values for Elgato entities."""
-
-    value_fn: Callable[[ElgatoData], float | int | None]
-
-
-@dataclass
-class ElgatoSensorEntityDescription(
-    SensorEntityDescription, ElgatoEntityDescriptionMixin
-):
+@dataclass(kw_only=True)
+class ElgatoSensorEntityDescription(SensorEntityDescription):
     """Class describing Elgato sensor entities."""
 
     has_fn: Callable[[ElgatoData], bool] = lambda _: True
+    value_fn: Callable[[ElgatoData], float | int | None]
 
 
 SENSORS = [
diff --git a/homeassistant/components/elgato/switch.py b/homeassistant/components/elgato/switch.py
index 78af3adfa53..e9ab506c3a4 100644
--- a/homeassistant/components/elgato/switch.py
+++ b/homeassistant/components/elgato/switch.py
@@ -19,21 +19,13 @@ from .coordinator import ElgatoData, ElgatoDataUpdateCoordinator
 from .entity import ElgatoEntity
 
 
-@dataclass
-class ElgatoEntityDescriptionMixin:
-    """Mixin values for Elgato entities."""
-
-    is_on_fn: Callable[[ElgatoData], bool | None]
-    set_fn: Callable[[Elgato, bool], Awaitable[Any]]
-
-
-@dataclass
-class ElgatoSwitchEntityDescription(
-    SwitchEntityDescription, ElgatoEntityDescriptionMixin
-):
+@dataclass(kw_only=True)
+class ElgatoSwitchEntityDescription(SwitchEntityDescription):
     """Class describing Elgato switch entities."""
 
     has_fn: Callable[[ElgatoData], bool] = lambda _: True
+    is_on_fn: Callable[[ElgatoData], bool | None]
+    set_fn: Callable[[Elgato, bool], Awaitable[Any]]
 
 
 SWITCHES = [