American Airlines in Los Angeles has Admirals Clubs in terminal 4, terminal 5 (the former Delta Skyclub), and the remote terminal for American Eagle flights (“Eagles Nest”).
The terminal 4 lounge complex has only just re-opened. It features an Admirals Club, a Flagship Lounge (business class lounge), and Flagship First Dining across from gate 40. The Admirals Club gets really crowded if you don’t know what you’re doing.