Let's see....
-I think Garbodor is the coolest concept and most endearing design in the series. I had been wanting a garbage creature like it since the first generation. It is literally my dream pokemon.
I wrote a whole bloated article explaining why in further detail.
-In general I like the inanimate objects the most. They feel more like
monsters, which pokemon are intended to be, and they've never made an object pokemon with a boring or forgettable design.
-There are virtually no legendaries and absolutely no starters that I like enough to ever use on a team. Nothing against most of them, just not my style at all.
-The only dragon type with a design that really appeals to me is Druddigon. Scaly and monstrous like a dragon ought to be.
-I find all Eeveelutions repetitive and rather dull. Vaporeon is the only one that stands out at all. Why are the rest so plain in comparison? Seems like sheer laziness.
-I think Lucario has the worst design of any pokemon. Could have easily been neat, but I just find its contours and patterns clunky, awkward and unpleasant while looking to much like a Sonic/DBZ OC of some sort.
-I wish Gen 6 wasn't introducing yet another fox. We have twice as many foxes as we need while thousands of more exotic and interesting animals are still without pokemon.
-I thought light-type was the lamest of all fan ideas and I'm so glad they made "fairy" instead.
-My favorite thing about fairy is that it will be weak to poison, meaning all my favorite pokemon will be able to OHKO some of my least favorite.
-I've always resented how biased people are towards bottle-nosed dolphins over other aquatic life, so I never want one in pokemon unless they do something twisted and unexpected with it, like an ugly dark-type.
-I feel the same way about wolves, too. Why do people want one so freakin' bad? We have dozens of dog pokemon. That's literally, biologically the same thing.
-I too adore tentacool, zubat, rattata, bidoof and other common pokemon. They always have fun or just plain adorable designs. I think it's really stupid of people to hate a pokemon simply because it's common and not for its other individual merits.
-Of all the woman-shaped pokemon, Jynx is by far the coolest, most interesting and most creative. The others are just bad fan-art fodder. Too many people only like Gardevoir for sad, lonely, creepy reasons.
-Vailluxe is an innately fun concept. Pokemon is good. Ice cream is good. Something is terribly awry with your inner child if you don't find a deadly flying ice-cream shaped monster at least slightly amusing. Maybe you have no soul.
I dislike people who like a certain Pokemon only cause they are "unpopular" by fandom standards which they feel somehow makes them "against the norm and cool"
Most of my favorite pokemon seem to be among the most hated by the fandom, but that isn't even remotely what I like about them. I wish they
were popular. I'm happy when everyone else gets what I like about something.
The people you describe present a problem for me, because I'll think someone has similar tastes when they're actually just being "ironic."
"HAHA YEAH! THAT'S MY FAVORITE TOO! BEST POKEMON EVER RIGHT!?!? WINK WINK LOL"