How to research US banks?

Hello all,

Following on from the fallout of SVB, FRC etc, I think that now could be a fantastic time to buy some distressed stocks in the sector. SCHW is particularly catching my eye.

I was wondering if anyone could share a good process to research a bank? Sure, the common practices apply such as checking balance sheets and cash flows, but other important metrics such as CET rations and AOCI also exist here.

Thanks