Ground
Swampert
This was my strongest Pokemon ever in any of my games that I personally trained (lvl 78) I've always had a close attachment to Mudkip
Water
Blastoise
Squirtle was my first Pokemon ever (fire red bruh) and honestly it's design is sick!
Fire
Arcanine
I always thought arcanine was the best Pokemon. I have never had one until recently and it's just the best in my eyes.
Flying
Aerodactyl
I love dinosaurs and it's one of the coolest m************ around. Not to mention it's cry that annoyed my parents with for hours
Steel
Skarmory
I mean seriously this Pokemon is the epitome of great design and good colors nuff said
Grass
Breloom
I honestly have no clue as to why I like breloom
Rock
Rampardos
Once again another dinosaur on the list it's based on one of my favorite dinosaurs (pachesepholosaurus (i know that's not how it's spelled))
Bug
Dustox
I've tried to get this Pokemon repeatedly and I got beautifly. Ughh anyway for it's annoyance it's my favorite
Dark
Absol
Hands down one of the best Pokemon designs ever. Even better is its mega evolution look.
Ghost
Gengar
As some may know I'm really into Pokemon myths and gengar is included in one (gengar=clefairy shadow)
Psychic
Gardevoir
This isn't really my favorite but my crush thought it had a pretty design. That my friends is how you get a new favorite Pokemon.
Normal
Meowth
The one character in the anime that has stayed likable throughout the series. Props to you voice actor
Poison
Arbok
I never realized how useful this Pokemon was till recently in my heart gold game I've been using and I realized it has alot of good options in its movepool.
Fighting
Hariyama
With its way oversized hands and "man skirt" hariyama makes the cut because if it wasn't so scary it'd b a really funny Pokemon
Fairy doesn't apply because I didnt care to see what kind of Pokemon are there
Electric
Raichu
The reason I chose raichu is because...I hate the hype over pikachu and seeing someone with the brains to evolve it is an awesome trainer
Ice
Lapras
It's intelligent, well designed, and hard to get in some games (and easy in others). What's not to like
Dragon
Salamance
Honestly I'm not a big dragon person but I think Salamance is cool in the fact that bagon is so undeveloped you can't help but be happy when he grows into this beast
Honorable mentions:
Nidoking, Ampharos, electabuzz, joeys rattata (creepypasta), dusknoir, gyrados, kabutops, and feraligatr