You can't go wrong with a classic PB&J. However, here's some things I like to do. First, slightly toasting the bread gives it a nice crunch, not enough to make it toast, but just enough to give it the crispy edge of toast. Creamy peanut butter tastes better, but crunchy holds together better, so either one is fine. And I do like classic grape jelly, but something like strawberry jam tends to work better with the final step, fresh sliced bananas in a single layer on the sandwich. I know it's slightly redundant to have a fruit on top of the fruit preserves, but the classic strawberry-banana combo hits very well, and I think it's delicious. Trick question. There can never be too many Kecleons. ...Unless we're talking Mystery Dungeon, in which case, anything over 10 will end in tears, typically.
Definitely another pure type. Probably either Psychic or Dragon, the former reflecting it's ability to change its type and the latter because lizard probably. Normal is absolutely the perfect type for it, however.
Honestly, a griffin or hippogriff is something the Pokémon Company has consistently bombed out of doing, and I'd love to see something with that kind of concept shine. I mean...I wouldn't turn my nose up to it, but I think he's fine as is. Plus, it would totally devalue how terrifying he is in literally every Mystery Dungeon game up to now. So, I'll keep my lizard boi as is.
Eh, probably Budew. Not because it's inherently bad or anything, but mostly because it is incredibly forgettable. I can remember Roselia and Roserade, but I really have a hard time remembering there was a Pokémon before Roselia. Also, I will forever hold it against Nintendo that Alomamola should have been the evolution to Luvdisc. It is so close in design that it feels wrong to not have it as an evolution.