Display text and score above players character (mc 1.16.3)

I have tried to display a score value and a text above the player character/ under the name but all my attempts have failed (ish).

The score value i want to display is the player Xp level. I did it by running this command:

/execute as @a[limit=1,sort=random] store result score @s level run data get entity @s XpLevel 1

The text i want to show is the players rank. The higher level the player has the better rank for exemple if the player is in level 6 > 9 the player has iron rank… I did this by running example this command:

/execute as @a[level=6..9] run tag @s add iron_rank

Now i just want to display the level and rank above the players character/ under the name.
My Idea was to display the level score was to simply display the score belowname with this command:

/scoreboard objectives setdisplay belowName level

But when i switched to third person i couldn´t see the score under my name/over the character for some reason.

My idea to display the rank was to summon and then teleport an small and invisible armor stand with a custom name at the player. This works but the armor stand can be in the way for the player if you want to interact with something above you!

1. /summon armor_stand ~ ~ ~ {Invisible:1b,Invulnerable:1b,PersistenceRequired:1b,NoBasePlate:1b,NoGravity:1b,Small:1b,CustomName:"{"text":"Rank: iron","color":"gray"}",Tags:[iron_rank]},CustomNameVisible:1b
   

2. /execute as @a[limit=1,sort=random,tag=iron_rank] at @s run tp @e[type=minecraft:armor_stand,tag=iron_rank] ~ ~1.5 ~
   

I also tried this with the level score but it has the same problems and it will require 1 command block per level! (The rank also require 1 command block per rank but it will be like 10 ranks but infinit levels)

I want it to look something like this.

/summon armor_stand ~ ~ ~ {Marker:1b}