The Charity Bank, Triodos Bank, Co-op/Smile Bank would be the first three I’d say. They tend to go above and beyond to help the World.
I’ve got Monzo and Starling level pegged. Decent environmental, no funding wars, stays out of politics, treats customers fairly. You could say the lending is responsible, I think they’ve made it clear not to offer more that people can afford or trying to keep them in debt to maximize fees, allow to pay back early etc. They could make it clear what their partners ethical stance are as it doesn’t appear to matter that they also have the same level or higher.
The worst offenders are still the big four HSBC/FD, NatWest/RBS, Barclays, Lloyds.