Hi guys. Sorry if it has been covered already. I’m alien to a lot of terminologies and acronyms used on this forum and I’m slowly learning. So please forgive if this topic has been covered already.

I’m contemplating moving to the US from Middle east, currently on the A380 and have flown 330,320 and 737. 7000 hours total time. GC holder.
What are the chances of starting at United on the WB and also the likelihood of based out of IAH (any fleet).
Or AA, DL are better options? (Any base)