I guess I'll lead through example here; thus far for this segment of research week, I've found Buneary Cosmic Pass to Spritzee godly, especially with the para spam style of team I ended up with in building. Additionally, Buneary's Healing Wish set makes quite a threat and honestly has screwed me one too many times. I was thearymoning Healing Wish to mainly support Rhyhorn which loves the recovery. Jump Kick + Frustration + Ice/Thunder Punch provides decent enough coverage as well allowing you to really mess with certain teams.
Mantyke has be a lord for me, despite it missing a third of its Air Slashes and getting only 1 burn with Scald. It has allowed me to beat Abra's with insane ease as well as troll scarf Chinchou thanks to Water Absorb. Also, my spread is able to take a V switch from Chinchou all but 6.8% of the time from full, allowing me to score a lot of free damage and in theory burns on the other team. It also has some okay synergy with Ponyta and great synergy with Foongus/Ferroseed.
I'm also not sure how I feel about Ekans; the para on incoming Drilbur, Sandshrew's, and Archen's are really cool, however I feel like it has too much 4mss. I might change it up a tad, and drop Coil just to see if it can still function as well as it does now, while also letting me hit Fletch better. I don't really have anything else to add for Ekans unfortunately.