Bulk of my time was VFR helos. Airline flying wasn't a difficult transition. I think gojet, xjt, and skw cover the cost of training or provide it in initial for atp written. It's not just a test anymore. Check the new requirements.

Most regionals will take helo time if other atp mins are met. Most majors do as well, though it's not as favored as say heavy c17 time. AA doesn't have a min FW time listed, UAL and DAL take rw time but still require 1000 fw turbine hours. JBLU takes rw time. The only one who likes to crap on RW time is SWA.