This isn't a good question. Any engine (assuming no data limits) that has pokemon implemented is not likely to have a cap to prevent putting a large number of mons into a game. Not to mention gen 7 isn't even out, so there's not going to be public resources that include all the new ones for a bit.
If you mean the 3d aspect of the new gens, that's a horse of a different color, and likely there's no public work to help you. If you want to clarify your question further, do so, if not I will remove/lock this thread.