Are Yahoo! &Hotmail now considered as outdated domains? Is it recommended for job applicants to upgrade to Gmail?

All those mails reach to same destination, so the source has no importance.

I think most people are going to Jmail but I see that this range of vision depends on the person's actual experience and their relationship to using the internet from near or far

Certainly Gmail has gotten a lot of new services in the messaging field

If Gmail is better protected agains scams and spams it may be better to switch to Gmail only because of too many spams arrive through yahoo. About hotmail I have no experience