Except for mosses and Java ferns, I don't have any issues with growing plants in high temperatures in my planted discus tanks. All of my tanks are at 82 minimum, the discus are at ~85. Your lighting will be the real restriction.
Some really easy quick growing stems that will suck nutrients out of your water like crazy are L. Sessiliflora and water sprite or wisteria, most versions of Hygro will work too, although some are considered noxious weeds.
If you want to go rooted, jungle vals and swords are pretty forgiving, so is dwarf sag. How big is your tank? Any interest in a MONSTER sword plant? Its outgrowing my 125. Is just too big and you can't see many of my other plants anymore.
The plural of anecdote is not data