You would have to know the right’ small banks. How would you research that?
The main way would be your local grapevine, ask around, especially your conservatively-minded and financially-astute friends and acquaintances. You have local republican clubs? Well they have treasurers. Know anybody on your local FINCOM (Finance COmmittees)?
Beyond that, the “dry” method, is to check their filings. Start googling. Is a small bank owned by a much larger one? Is it a state-established-bank, or a glowBullista. Look at their federal/state financial reportings.
Data’s usually 3 to 6 months old but Bankfind will come up with some usable data. https://banks.data.fdic.gov/bankfind-suite/financialreporting