I got approved for the Chase United Explorer card a few days ago, with a 5k limit, and barely any history.
Aside from a Amex Authorized User, I only have 2 cards.
Hilton Amex - 1k Limit - Opened Sep 2019
Delta Gold Amex - 1k limit - Opened Oct 2019
And the Delta card isn't even reporting yet.
Everything I read said Chase was picky and I needed at least a year of history, so I'm quite shocked I got approved.
Way to get in! Congrats!