Okay, so far what I could find is:
Declared:
Ted Cruz
Rand Paul
Marco Rubio
Ben Carson
Carly Fiorina
Mike Huckabee
Will Most Likely Announce:
Jeb Bush
Scott Walker
Chris Christie
Rick Santorum
Rick Perry
Lindsey Graham
Bobby Jindal
Is Officially O-U-T:
Mitt Evander Romneyfield
Way too many and I fear they will all cancel each other out. No chance for anyone to separate themselves. Hillary has one no name opponent.