Teddy's +5 combat strength on his home continent does apply, I believe, but I have less experience seeing that since I've usually overrun my home continent with my religion very quickly, and I've only ever played America like twice.
Phil's definitely applies, he's an annoying opponent to browbeat into submission and fun to do the browbeating with. It makes spreading his religion to a foreign city easier if you have an apostle (preferably with Debater) following a conquistador who then bumps into a missionary or guru. This makes Crusade even better for Spain, but also somewhat subverts his ability to auto-convert foreign cities when they get conquered. But it can help start the conquest in the first place, so there is that.