I did some playing around with kodak 2237 and found I can get it to 50 iso using rodinol. It's actually still fairly grainless despite that haha. I did rodinol 1+50 at 4 minutes with normal stop and fixing times. I can absolutely see this film being used for more walk around at this ISO. I may even try it with flash one day as a walk around film for everyday stuff! The film is unfortunately hard to find but if you can find some I totally suggest shooting it!