1: Grass types I guess. Electric and Normal types are also up there.
2: Special moves.
3: Uh, Chuck's wife? Whitney otherwise if Chuck's wife doesn't count. Depends on what you mean by, "intrigue." If you mean like, "Oh yeah, I'm so intrigued by this. Yeah, capture my interest," then, Erika I guess. I don't know.
4: Hoenn Contests. I didn't like the dressy bits of Sinnoh's contests.