Probably TPIC. Get a 1000 hrs and then reevaluate. Including potential CKA options.
The majors, except for perhaps SW and maybe NK, don’t care if you have an XYZ type rating. But there’s no telling under a points based system if an additional type rating triggers the call. I wouldn’t quit a 121 CA job, if I had low 121 TPIC, to get a bigger jet type rating at a LCC if I was a young guy (<45?).
$.02