

if you mean this list that is quite concerning because each individual have difference banking preferences and it looks like it depends on the bank to support GrapheneOS directly But, I don’t think they bother because low market share (https://grapheneos.org/usage#banking-apps)
many countries are not supported like South Africa, Uruguay, Paraguay, Latvia, Brunei etc. that is why degoogled OS support for banking apps are patchy and I don’t think normies are bother to install it.