I would say maybe a visual addition.
For example if you have the dungeon master title you have maybe a small dungeon logo above you.
Same as with the: ‘been there done that’ title that shows a small gold star logo with you.
And with master crafter I would say maybe some sort of universal tools logo.
And maybe a medic cross when you have combat medic.
And so on
Edit: only one logo at the same time then.
Devotion to that what matters.