I was wondering the same for ORD and IAH. Starting soon, currently live in ORD but contemplating moving to IAH and would like to see what I can expect as career progression at each of these bases. Would highly appreciate if someone can share this info.

ORD NB FO line holder
ORD WB FO reserve
ORD WB FO line holder
ORD NB Captain
ORD NB Captain line holder
ORD WB Captain reserve
ORD WB Captain line holder

IAH NB FO line holder
IAH WB FO reserve
IAH WB FO line holder
IAH NB Captain
IAH NB Captain line holder
IAH WB Captain reserve
IAH WB Captain line holder