I am curious about it, since I suspect some issues with it.
I can use both of them in the Create<Entity> actions created by Oustystems without getting a warning.

I am mostly worried since we now have again double data-types which are almost the same, yet they are not on certain parts.
It worries me a lot, since the user/user_master legacy issues...

If they are for the same entity, <Entity> and Record of <Entity> should be mostly interchangeable.

User and User_Master were two different entities. The new datatype model are different (more compact) ways to represent the same entity.