Any thoughts about perhaps going with a backless chair, a stool? You may have more options with seat depth.

yes, that's an option,but would much prefer backs

You can have shallow uncomfortable chairs that people can’t sit at, or you can have real human sized chairs that take up space. The fact that human beings take up a 24”-30” circle as a dimension should have been part of the overall design measurements considered. Which is why you need 54”-60” between back to back seating arrangements like peninsulas and tables.

Or you give up the bar seating there entirely because you really don’t have room for both.

I am ahuman and this stool is actually alot more comfortable than many others it gives your lower back support and it swivels which IMO is a must for a stool in a small space.

It depends on what the butt can sit upon - age, physical stuff....