Purist bottles have no plastic taste. They are coated with something. Art's cyclery on line is where I got my most recent set. Those were clear. Some are sold at bike shops. They are thin and squeeze easily. The first set I got had baby bottle type nipples on top of the valve. You can leave them open without spilling. Just grab the bottle and take a drink as if it were open.
I think Specialized might be selling them. They are all over the place...…….
Edit - (removed link and put up a better one.
This is a better page…..scroll down
https://www.amazon.com/s?k=purist+water+bottle&hvadid=78477683623545&hvbmt=be&hvdev=c&hvqmt=e&tag=mh0b-20&ref=pd_sl_8vzm8ocbxf_e