That’s a hard one.
Buddhism appeals to me. Pacifist yet realist, did the ‘open hand’ method of martial arts emerge under Buddhism? Buddhist’s may correct me. Reincarnation - I recently sent both my dogs, 14 and 17, my pals, to the big kennel in the sky. I had them cremated and sprinkled their ashes in Lough Erne where we have a boat and spent a lot of time to release their spirit into the circle of life. I can’t believe God created animals for no reason. Meditation, spiritual enlightenment, doing no harm to others etc. appeals.
Judaism - as I understand it, but I may be explaining it badly, they have a different understanding of the Devil which I think says something. I think the Christian concept of the Devil may have been influenced by the Greeks. They also think we our ‘dark’ side helps us, in that we learn to, among other things, be streetwise and have ambition which are useful life skills. But as I said I may be explaining it badly.
Methodism - the focus on equality, good works and singing appeals, and the fact they think everyone who professes a belief can share in communion and you don’t have to join their Church to do so.
Truth is, if Catholicism did not exist I may start my own religion that would be a mixture of many.