Agreed, Normal has a lot of cute Pokemon in it. My favorites Normal types would be Snorlax, Kangaskhan, Teddiursa, Ursaring, Miltank, Blissey, Exploud, Spinda, Zangoose, Lilpup, Minccino, Cinccino, and Furfrou. Although I will have to admit that while Normal has a lot of Pokemon I like, some being some of my favorite Pokemon, it does have a lot of Pokemon I don't like, but it has more Pokemon that I like than dislike. I also like Normal because it only has 1 weakness, one immunity, and they can be versatile due to being able to learn moves from most of the other types.
It would have to be Rock and Ground. I don't completely dislike any of the types as well, but Rock is honestly my least favorite. There aren't a lot of Pokemon that particularly wow me and I don't like quite a bit of the Rock type Pokemon and with the exception of Diamond Storm, Stone Edge, Powergem, and Rock Slide, I also don't care about a lot of the Rock type moves and in my opinion, Steel type is a better version of Rock type. As for Ground type, I do really like a lot of the Ground type Pokemon with only a few that I dislike, however I just really don't enjoy Ground type a whole lot, I find myself using Earthquake way too often with Ground types and barely anything else.