As far as I know, of various religions that is, godparents aren't exclusive to the Roman Catholics. The Anglican church does as well as Church of Scotland, the latters I believe it's up to the parents if they want them or not, it's a choice. But that's my 2-pence worth lol!
I grew up with a few too many religions and gave up after an atrocious funeral service in the 70s. My own godparents, well one was there for me but the other wasn't both dead now. For our children, daughter's couldn't be bothered and they've died, son's the same, no bother but still alive. I felt bad for a while, wondering if I should tell my son's godparents that he'd died but decided against as they couldn't be bothered while he was alive.
Oh the phone calls from them with accusations which were all false, at the end of the day, since they didn't want the honour in the first place they should have said no.
I was told that I was going to be godmother to my nephew. I paid every birthdays but found out he never got his funds as intercepted by his mother for booze. After I got married, found out the godfather had died and his common-law partner took over as she believed it was her rights. Long-story-short, I was always there for my nephew but I got nowhere he wasn't interested.
Personally, I was given the job just to babysit. Oftentimes, never a thanks not even when I saved his life at 2 months old. Got emergency operation. Okay, I'll leave it at that, but I did my duties but it went unappreciated. I now politely refuse lol!
I've spoken to my daughter about it, so that when she has children she can make her own choice and discuss with the father.