Tbf it was pretty much a mixed bag from everyone.
Angelino was a bit wasteful but then again there were times in the game where he looked like the only guy who could create something. Same could be said of De Bruyne, Bernardo and Sterling. Aguero was either invisible or wasteful but at the same time did great for the goal and he looked particularly sharp with Sterling on the right. Gundogan was either quickly whipping it about looking to create chances and keep play moving or plodding about dinking it to their CBs. Stones was good but he did play a part in the goal we conceded, same for Fernandinho and obviously Ederson most of all. Silva either had us ticking beautifully (between 1-0 and about 30 minutes) or was invisible. Jesus was alright, good link/hold up play and pressing as per normal but fluffed his one chance.
Point is pretty much everyone today was both good and bad, and depending on how people view things that could have meant almost any of them could have been MOM. Walker in fairness was solid for the most part(nothing more or less), so two major goal contributions on top of that does swing things massively his way.