Which grass for no irrigation

Bermuda. It will brown out during an extensive drought but green up once it rains.

I mean I don't like the look of commom but in terms of the shite just popping up and growing everywhere it is fantastic.

Anywhere on the gulf coast you are going to get some afternoon showers during the summer. As a result, pretty much every turf grass would grow well. Just depends on what you want. I have only ever dealt with centipede and st Augustine. St Augustine is a voracious grower, so if you want to cover the yard quickly or cover bare spots, I would plant st Augustine. St Augustine seems to be better in shade. Centipede is slower growing, but doesn’t require fertilizer and you won’t have to cut centipede but every two or three weeks.