Redmond just announced service to PHX on Skywest 700's, so I guess those AA 700's Skywest announced won't necessarily be based crewed out of LAX

"American will use a Bombardier CRJ-700 series aircraft, which accommodates up to 67 passengers. Of those, nine are reclining, first-class seats.

The American Eagle-emblazoned plane will be operated by SkyWest, which also operates United and Delta flights from RDM."