There are a lot of good keepers out there. I think the goalkeeping at the Euros was generally excellent and not all those keepers were at big clubs. I was at Fiorentina v Atalanta in April and Atalanta's Italian keeper Carnesecchi was brilliant. Then they played their no.2 keeper at Anfield and in the Europa League final (I presume he had played in Europe all season) and he was also brilliant.
And I think most Championship keepers are very good.