Export an Animated Character from Blender to Unity
Blender - FBX Export Settings - Unity Forum
Perfect FBX export settings from Blender 2.8 to Unity : r/Unity3D
Here is how to export FBX models to Unity with perfect transform rotation values if you're suing Blender. Works perfectly with rigged meshes too. More details is in the comments. : r/gamedev
Blender issue) How to combine multiple actions/clips to just one action/clip for export to unity - Unity Forum