From the top of my head, my 100%s are;
- Blastoise (with hydro canon, yay)
- Dratini (hatched today)
- Slowbro. Two of them, the thing is they hatched from eggs at the same moment. They even had the same moves.
I don't check the IVs of every Pokémon I get so I'm certain I missed the occassional 100% Pidgey or Weedle.
Gloom 432, caught as Oddish, spawned nearby, announced on local GO chat, rushed to get it. Since I already do have Vileplume and Bellosom evolved, this stays as Gloom for living dex purposes. Mewtwo 2844... yeah I just got very lucky with this one. Just one Raid with Windy weather and there you have it. Unfortunately it's going to take a while before I start powering it up Alakazam 215, as Abra from a trade during Psychic event, it's actually a non-lucky 100, but still nice. Evolved for the collection, might power up eventually. Pidgeotto 775, caught as Pidgey at random, just checked IVs and it was a 100 Linoone 1051, traded in as Zigzagoon today, Lucky 100% My second, after the first Pidgey.
Misdreavus 763 from research. I actually did memorize the CP so the moment I saw it I could tell before catching it Drifblim 748, traded in as Lucky Drifloon. Appraised it, got shocked, then immediately evolved it. Might power up someday as a defender considering it is Lucky. Lopunny 1589, caught as Buneary downtown. This one isn't as special as it spawned right next of everyone and someone just noticed and then we all caught it. We didn't even have to run to it or anything. Immediately evolved; might see some use if its Mega gets released?
I can now add two big names to my 100% list; a lucky Mewtwo (CP3442) and Giratina (CP1931). Of course my 100% Dratini is now a big Dragonite (CP3019), any Dratini candy I get is spend to power him up. I feed Mewtwo all the rare candy I get but I'm not sure if I should power up Giratina.
Caught a second 100% Poliwag today. Immediately evolved it into a Poliwhirl. I don't have enough candy to evolve it again, but when I.do I'm evolving it into a Politoed, since I already have a 100% Poliwrath.