I'm not a fan of natis. They're lovely, but thick and grippy doesn't work for me.
Vatanais are fantastic wraps for summer - the stripes range is very thin, and the older jacquards are also quite thin. the newer ones are a bit thicker and softer. Not thick though. All 100% cotton and reasonably priced.
The bara barns are great summer wraps - all shorties, though, but fine for a rebozo, new-sew ring sling or ruck tied under bum. Kangaroo carry as well, I guess.