I found a very nifty build.
Pantheon - God of the Expanse (Production and Faith on border expansion)
Founder - Ceremonial Burial (Faith and Culture on great person expansion)
Bonus - Holy Law (Faith, Science and Gold on Policy pick)
Follower - Veneration, Gold and culture on faith purchase.
2nd Follower - Free pick of religious buildings (I went Synagogues because 3rd and 4th adds some synergy). But cathedrals (gold and gold on border expansion would work. As would a number of religious buildings
Enhancer
Range of choices
Prophecy - Cheaper and Stronger Great Prophets
Sacred Calander - Percentage Great person generation bonus, and gold and golden age points per city following
Symbolism - GPP points
Reformation
Holy Land - Votes for holy sites
Knowledge Through Devotion - Buff GP tiles and works
To the Glory of God - Faith to purchase any GP, and Gold science and culture on expansion.
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Now, this is basically the faith monster Byzantium turbocharged. Two of the three faith generating Founder beliefs, which actually have an incredible synergy. Buying, and using a great person produces a bunch of culture, which triggers polices, which generates more faith to buy more stuff which produces more culture. Veneration only strengths this further. Faith converting into culture, basically means all my social policies are effectively cheaper. And Holy Law is consistently most of a tech, if you hit the max in terms of followers, which is well within Byzantiums reach.
Veneration is also very useful as the first belief because the early culture and gold from it are useful in their own right. But the culture can be used to trigger border expansions. Buying a faith-building, or a missionary in a city is easily enough to claim a tile or two when the city is still small. Buying a great person in the city can claim multiple tiles. I didn't realise this synergy until afterwards, so in my game, I don't actually have God of the expanse. But even lacking that and lacking Angkor Wat, with Tradition, I have my capital city in the Late Renaissance easily reaching a great distance outwards, from all the lump sum culture generated. Considering my production troubles, Expanse would have been very useful and likely generated more faith then Beauty (which ended up not being amazingly helpful as I didn't grab that many wonders).
Then the enhancer is up to you. Prophecy and Holy Land are perfect if you want to go for a diplomatic victory, it isn't too hard to get 2 votes in the early world congress just from Holy Sites. Even without that, my embassies, coreligionists and religious authority was more than enough to pass world religion on the first round of the congress. The others just mean more GP, which then trigger more yields.
Reformation is also up to you, though I ended up going with To the Glory of God, to best spread out my faith, and the extra yields on expansion. But any of them are viable and could work with a strategy.
In terms of strategy, this is clearly a Tradition build. Most wonders are not particularly critical, the main one for me was actually Hagia Sophia for enhancing my religion, after spending most of my faith on missionaries. And the free Great Prophet on being expanded, and picking Prophecy was enough to help spawn a second one, in the next turn. But any wonders that makes Great people more valuable or gives you more of them, particularly triggered yields is a good bonus. The Pyramids, Angkor Wat and University of Sankore are early wonders to aim for, though missing any of them, or all of them isn't crippling. Of the three, in the game I'm in, I only got the Pyramids.
For later policy, I took only the Fealty opener and then completed Artistry. Fealty opener faith purchase discount is very useful, and purchasing a round of Monasteries for all my cities was some useful border expansions and yields. After that, either Rationalism or Industry works.
Overall, I've tried the super spreader build before and found it was fine but not amazing. But my above build feels incredibly strong, and pushed me from in the middle of the pack in policies and tech, to the leader over the course of the medieval and Renaissance.