You can see your name in inventory if you are in spectator and you are spectating someone through their POV
How you achive this is by jumping in to spectator -> left clicking on someone to see their POV -> Open up inventory
Im unsure if this applicable on other minecraft versions only tested in 1.16.4 as its the lastest version
Environment
Minecraft Java Version
Hey there!
This looks to be a duplicate of MC-187282.