How to give a block a floating name without using armour stands or mobs

I'm wondering how I would give a block a floating name tag, I've used mobs and armour stands but they're "meh" in the sense of full efficency

However, if I used /give structure_block the structure block by default has a floating name tag, and upon killing all entities in the game, that block doesn't disappear (meaning it's not an entity).

So is there a way to replicate this with other blocks? (i.e. give other blocks a floating name tag above it).

I would like to achieve this in vanilla, no mods, no plugins