A crafttweaker script to remove gravity of most entities.
Only tested on 1.16.5, but you can try it on other MC versions as well.
Works better than the NoGravity Datapack. The datapack is no longer needed if you install this script.
The More Powerful Gamerules mod is suggested to remove sand-like block gravity as well.
If you have installed this mod, run /gamerule disableBlockGravity true to disable sand-like block gravity.