Think you know the names of all the buttons on a PlayStation controller? Think again, according to Sony. Are you an X or Cross person?
https://www.notebookcheck.net/Square-Triangle-Circle-and-Sony-settles-PlayStation-debate.434683.0.html
Just using logic, those are not characters so no X. Well in the case you want to spell it faster an X would be great. The same for other symbols, you can use like 0 or O for ⭕. Or similarity to like greek characters and so on.