The set of gamepad button labels
Defined in <SDL3/SDL_gamepad.h>
typedef enum SDL_GamepadButtonLabel
{
SDL_GAMEPAD_BUTTON_LABEL_UNKNOWN,
SDL_GAMEPAD_BUTTON_LABEL_A,
SDL_GAMEPAD_BUTTON_LABEL_B,
SDL_GAMEPAD_BUTTON_LABEL_X,
SDL_GAMEPAD_BUTTON_LABEL_Y,
SDL_GAMEPAD_BUTTON_LABEL_CROSS,
SDL_GAMEPAD_BUTTON_LABEL_CIRCLE,
SDL_GAMEPAD_BUTTON_LABEL_SQUARE,
SDL_GAMEPAD_BUTTON_LABEL_TRIANGLE } SDL_GamepadButtonLabel;
This isn't a complete set, just the face buttons to make it easy to show button prompts.
For a complete set, you should look at the button and gamepad type and have a set of symbols that work well with your art style.
This enum is available since SDL 3.1.3.