I can't recommend Psychonauts 2 enough. At $8 CAD it's at an all-time low price on Steam. I played it on GamePass when it came out and I'm purchasing it because I loved it that much and think Double Fine should be rewarded.
I'm also eyeing Oneshot, Mad Max, and Ace Combat 7. Everything else can wait for the Winter sale - but I doubt any of the prices will be all that different. The nice thing about being so behind on games is I can wait out new titles (last 5 years) for the most part and get great titles from yesteryear at pretty much impulse purchase prices.