Attach and Path tracks are something I’m intending to document. So yes, I agree there is a hole here.
Great!
Your new document does cover additive, relative, etc. Thanks.
My only note is sometimes the wording can be difficult to convert to real-world applications
Example: Relative - Applies this value as a sum total of all other additives and the initial value before animation.
Another sentence or simple example would make this easy to fully understand.