I just realized that there haven't been any nominations for Mega-Pidgeot or Mega-Audino yet :o
I was dismissive of Bird Jesus earlier when it was announced, but Mega-Pidgeot is a bit better than I initially thought. The main asset Pidgeot brings to the table is it's high speed, something most normal builds are lacking in right now. 121 speed is good, letting Mega-Pidgeot outspeed most of unboosted metagame excepting Greninja, Tapu Koko, and some more uncommon threats like Mega-Dactyl. With this speed Mega-Pidgeot is able to check a broad range of pokemon with more flexibility than other options on normal, including offensive threats like Mega-Medicham and Keldeo that Normal struggles with otherwise. Hurricane is extremely spammable, and the confusion chance is high enough to be an asset. Heat Wave hits Steel-types that resist hurricane, and it can pivot out of walls it can't break with U-turn.
Mega-Pidgeot also offers some utility that I didn't consider initially: Defog can be used to take pressure off of Staraptor for hazard removal, Work Up is an options to help break balanced builds like Poison and Water, and Tailwind is a very dangerous tool against offense, especially if paired with wallbreakers like Band / LO diggersby or Specs Meloetta. But Bird Jesus has it's problems.
It's not exceptionally strong, so won't be able to guarantee OHKOs on bulkier threats. And it isn't exceptionally bulky, so it can be taken out by threats it can't KO, and a weakness to rocks means Mega-Pidgeot can be difficult to sustain throughout a match. The main issue, however, is that it has the opportunity cost of one of the other more broadly effective pokemon on Normal, such as Meloetta, Porygon-Z, or Diggersby. Normal Teams don't have much flexibility with their teamslots right now, IMO.
Nonetheless Mega-Pidgeot is strong and has it's uses, especially on more offensive normal builds that can benefit from the momentum and utility it provides.
I nominate Mega-Pidgeot for B-rank on Normal.
Audino's an odd duck; she's superbly bulky with some solid utility but is often too passive to fit onto any Normal build outside pure Stall.
Normal / Fairy typing grants Audino a neutrality to Fighting-type attacks, which is very helpful for Normal, and Audino-Mega's 103/126/126 defenses are nothing to sneeze at either; she can take heavy punishment and keep on chugging with Wish / Tect or Restalk. Access to Knock Off lets Mega-Audino pester opposing teams and with Wish and Heal Bell she acts as a solid cleric. However, I'd argue what holds back Audino is (A) the lack of a useful defensive ability, obviously, since Healer is worthless in singles and (B) the lack of decent offensive presence. Audino-M is simply too passive and too easy to take advantage of by both offensive and defensive threats, even compared to Chansey. The reliance on Wish / Tect creates opportunities for opponents to exploit, and Audino can end up hurting more than helping if you aren't careful.
All that said, she's still a defensive tank and can fit onto more stallish normal builds who can support her with teammates to manage the threats that take advantage of her. But I don't see Mega-Audino having use outside this niche (and suboptimal) build any time soon.
I nominate Mega-Audino for C-rank on Normal.