Personally I prefer the idea of "pinned" more so than "recent".  I may be helping a teammate debug something all day, and all those notebooks or tables don't have much relationship to my work.  Then the value of recent is lost to me.  Same if I'm just exploring some tables.

I see the "for you" in the notebook catalog explorer, which is honestly the catalog I use the most.  I guess someone with a different role could be more catalog based.  "For you" is always a little weird because it implies a recommendation based on previous usage, and it seems more difficult than it should be to clear that out when we switch to other features, it takes time for the new stuff to stick in the recommendation.  If you're going to go with pinning, then "pinned" or "favorites" would suffice for me.

I might be the only person who does this, but I pin and un-pin folders from my Windows quick list  and rearrange the chats in Teams as work changes.