Ah gosh.

Mew and Latias share top spot. It gets iffy from there. I'd probably have to run that big fav pokemon picker thing and I know for a fact these things change often.

Funnily enough my main oc/pokesona the male shiny Celebi is not even in the top 10.

Slowbro/Slowpoke, Breloom, and Salazzle ;3

Honorable mention for Alolan Rattata, he is very cute with his little mustache~

Now there choices are some gas~

Good vibes only uwu
(and maybe some horny ones :p)

Nido, manectric. And if both nido count as one spot... choices get hard...feealigatr (all johto starters great)

Ursaring, Charmeleon, Zangoose!

Zangoose!

Cinderace, Raboot, Scorbun. Most obvious. Wartortle, Arcanine.

Bunny energy.

Bunnergy.

Lucario, Grimmsnarl, Slurpuff

Snivy, Buizel, Lopunny

Dragonite. Eevee. Nidoqueen. Honorable Mentions: Umbreon, Tyranitar.

Abra, Umbreon, Cinderace.

Okay, I had to check through an old file, cause I actually have a lot of favorites and it's hard to put them in like top 3. But I'll do my best. This will go for like the whole family too.
1. Dewgong
2. Venusaur
3. Mabostiff

There were so many, narrowing it down to three is tough.
Fairly certain this is inaccurate, but I'd be willing to talk to you about more/show you more if you are interested sometime.

At least the #1 is very accurate. Was not gonna be anything other than Dewgong. Heheh

Haha, yeah. Dewgong and Seel have been there for so long. I think prior to them being st the top, it was Mewtwo.

My 2. And 3. Are likely to change though possibly. But there are so many now. I wasn't too sure which to pick, but Venusaurs have had my interest for awhile now. I enjoyed raising Mabostiff in Violet. I probably overlooked a few too.

Sorry if I threw a curveball at you with my choices.