No Gravity

No Gravity makes the targeted entity uneffected by gravity.

Using the no-gravity tag

Any non-player entity that has the entity-data tag, will be able to use the no-gravity tag.

To summon an entity with the no-ai tag:
/summon villager ~ ~ ~ {Tags:["entity-data","no-gravity"]}

Tag	Command
no-gravity	data modify entity @t NoGravity set value 1b