I believe my guess on first two concurs with yours.Wild guess: Hop's Dubwool, N's Darmanitan, Metagross, Tyranitar
I hope I'm wrong tho but I think at least the trainer ones are probable
Problem is that, as well as being cool promos these decks are designed to be both playable out of the box and enjoyable for entry level players - and don't typically include 2 prize Pokémon.I believe my guess on first two concurs with yours.
But my last two guesses on the prerelease promos are lillie's ribombee and Iono's Kilowattrel.
^ Why not start the owner's pokemon era by having one of each of the featured game trainer's pokemon as a prerelease promo?