Imma throw in my support for Lopunny to A+
Completely unrelated: who else thought there would ever be a debate on Lopunny in A+ in OU, like ever?
On topic: okay so I made a few teams with Lopunny for a Serebii tour I'm in (yeah, I'm from there, sue me), and I had to resort to the ladder and battles with friends to test them out. All I can say is holy fuck she's good. Like really good. She's very comparable to Manectric in that they both have great speed and decent offensive stats and bulk. But that's it. After that, Lopunny's positives continue to flourish. She's a great answer to Mega Eye, as she can 1/2HKO the ghost with HJK (can't calc, but the rolls are te pendent on prior damage), which very few things can boast. Her base 135 speed stat is excellent in the ORAS meta, as the only faster things are Scarfers, bee, and aero (Zam is bad js), and only Aero reliably beats her. This leaves offense prone to her wrath.
Speaking of offense, it's not hard to get Lopunny in safely through the use of a VoltTurner, and when she does get in, think Greninja, but better (yes, better). Her speed is nearly unmatched and she has access to two great STABs in HJK and Frustration, which not only have good BP, but also gain perfect neutral coverage. She now has two slots to do whatever she wants with them. Personally, Ice punch and Refresh / Healing Wish are the moves that I've found to be the most useful, because of lolSalamence and a bunch of other 4x weak mons to ice (either STAB hits harder neutrally than 2x SE Ice Punch btw). The other move either helps her against stall by removing status, or healing another teammate when her job is done. Sort of like Latias in a way, another A+ mon.
Now the only real reason why I could see Lopunny staying in A is because she struggles against bulkier balance teams. She has no way of beating Slowbro outside of getting off a Toxic and switching, while other mons like Mew, Cresselia, Chesnaught, Mandibuzz (lol), Celebi, and other defensive grasses, poisons, and psychics ruin her parade. But if those are removed then she can simply smash through entire teams without breaking a sweat. Is part of the reason why SD Bisharp makes a great partner for her.
So yeah, decent bulk, great speed, good attack, great STABs, a godly ability, and the ability to run two free moves to tailor her to a team seems like more than enough to bump her up to A+
Lopunny for A+