It's a great argument to have. I'll go to my grave arguing Leroy Sane is one of the most naturally gifted footballers we've ever had - he's never maxed the talent he has tbh taking the easy option when Pep would've made him a better player. He would certainly be in my reckoning and Phil Foden should also make the XI somewhere.
Left back is a debate - I don't think we have any candidate who is up to the level of the positions in terms of nomination of an all timer. The position forever seems a black hole for us.
The Joe Hart/Ederson debate is a great one. Vastly different keepers, both will always have a special place in my old Blue heart.