The crazy thing is that on the last year I found emails from Google, and Apple, in the spam folder. Apple's were invoices... of which I get a couple a month (iTunes purchases, subscriptions). Google's I think were announcements for services, etc. tied to a Workspaces work account.

I can't think of no actions I did (in terms of identifying email as spam) that could suggest I might consider emails from Google or Apple, or any emails with that content, as spam. I mark things regularly, but almost always actual spam / phishing, or commercial mass emails from companies I have no relation with (banks, etc.)