The X button on the PlayStation gamepad has been a staple since the controller was introduced in the mid-'90s. What do you call it?
The PlayStation's X button is apparently called the 'cross' button - The Verge
Why does Sony call the “X” PlayStation button the cross button instead of simply just considering it as the “X” button? - Quora
Xbox Has Its Say On The PlayStation 'Cross' Button Debate - GAMINGbible
The Problem With The X Button - Talking Point
It's not 'X', it's 'Cross' – the PlayStation joypad revelation that's caused an outrage, Games
PlayStation controller - Wikipedia
X button, The world of sony Wiki
PS5 Will End 25 Years Of X & O Button Confusion
PlayStation controller's 'X' button is actually called 'cross' button, by Sohrab Osati