FBX
シェイプキー (Shape Keys)
Blender Shape Keys for Unity Blend Shapes
Combine Shape Key and Armature Animation in Blender for Use in Unity
Export a Shape Key Animation from Blender to Unity
Wind with Blend Shapes (Blender 2.8 to Unity 2020)
モディファイアー (Modifiers)
How to Export Blender Models with Modifiers to External Programs!