A lot of these so called "timelines" are silly. I don't think we need timelines where it's just movie 1, movie 2, movie 3. I mean, duh. Isn't it obvious? I mean sure, X-Men, MCU, the movies jump all over the place. But I feel if the movies are straightforward, no timeline is needed.
Anyway, I was thinking about this the other day. Loki and Endgame are about "alternate timelines". Everything else is about "alternate universes". They seem to be similar, but not identical, things. Why are we considering them to be the same thing?