Hey Ry4n,
Doubt this is what you are looking for, but so far I am sticking with stock OOS but with magisk installed and assorted modules such as the debloat module, busybox, and liboemcrypto. The reason for this is because so far this is not a very flashing-friendly device, without a real TWRP out for safety. I have tried EvolutionX which is really nice and I've loved it for a while, expecially on my older OnePlus devices, but it is not able to fully utilize the device's capabilities. Don't get me wrong, it is daily driver material and I do appreciate greatly the work that went into it and continually goes into it, but for my personal preferences unless there is a rom that is fully working with only minor issues (by my standards) I am not too keen on sticking with it; I love OOS cam and the quality with things like snapchat, and the speed of unlocking. Both seem small but because I interface with so many small things they become big things for me if that makes any sense. If you do try other roms though, I have found that it is not easy to get back to stock if you change your mind. EvoX, Havoc, Color OS, and maybe PA are your only options for daily driving for most people afaik so if you really wanna spend time with the device then you can try them out, in that order. Feel free to correct me if I am wrong though.