Pantheon really just depends on the the area around me. However I find that I usually go with Fertility-rites more often than not. I've also completely changed my opinion about Oral Traditions, when I realized that I could never see myself picking it up, even with most luxuries being plantationbased along with me starting in a jungle I just end up picking other things over it. If I play India I usually go for Ancestor Worship, to get a kickstart to my culture, mostly because I have no idea how my starting-area looks by the time I have to pick the pantheon.
As for religion, Ceremonial burial is kinda my go-to founder-belief, not really because I believe it is more powerful than the others, but it kinda fits my playstyle. However I find myself picking Holy law, Mandate of heaven, Theocratic rule and Way of transcendence plenty enough.
Follower-beliefs I usually go for Inspiration, not because I think it's overpowered but because I'm a sucker for policies
. Second choice can really go anywhere, Asceticism, Diligence even cooperation or mastery (although that's really rare). Usually the only building I'm ever picking is Orders, although that one is usually gone
. If I go for specific Sacred Sites games I can see myself picking up other buildings, but I haven't really done that since Piety got dumpstered.
Enhancers I really like all of them. It completely bothers me that Martyrdom doesn't scale with era like all other similar effects do, but I still end up picking it once in a while.
Reformation is a lot more interesting, a lot of strong choices here. Knowledge through devotion, Sacred sites, The one true faith and To the glory of God, are some personal favorites, but I wouldn't really complain about any of them. I guess the defensive combat-bonus belief is a little weird, Imho that one could really just be added into the offensive one as a feature, it's not like 15% is gamebreaking.