Quoted By:
I took an hour and did the all 807 Pokémon quiz and got 98% (787/807).
Theese I forgot completely: Lickitung, Aipom, Ampipom, Lickylicky, Spinda, Wailmer, Wailord and Luvdisc.
I knew what theese looked like but I forgot the name: Ferroseed, Ferrothorn, Jellicent, Spwepa, Quiladin, Pheromosa, Sandyghast, Charjabug and Mudsdale.
Theese I know but couldn't spell: Kangaskhan, Carvanha and Blacephalon
Conclusion: None. I think it all depends on what mons you've used in playthroughs. I've never used Ferrothorn or the Licky line for example and while they are memorbale I couldn't for the life of me remember what their names was.