Don’t chase an airframe. It is unlikely that JetBlue or anyone else is going to care if you get a 170/190 type rating rather than one for the 145. They’ve got to put you through their training program anyway.

Whichever aircraft gives you the best opportunity to get on the line, get hours, and (if you haven’t already been picked up by a LCC. or better), upgrade and get more TPIC is the best one.

In the interim, apply for a type rating for the Lockheed-188. Every type rating on your ticket is helpful.

https://registry.faa.gov/TypeRatings/

https://www.law.cornell.edu/cfr/text/14/61.73