I like PS glyphs because they are language-neutral and look more distinct, and I think, it would be point one in my choice. Point two is color-coding that helps most people (but may adjustments for accessibility?). Point three although ofercomplicating things is direction-coding, as it'd be generally nice to have a > shape near them, so they'd read intuitively from the first playthrough.
My initial thought went for second set of arrows. Like d-pad has one kind ⬆️➡️⬇️⬅️ and buttons have the other 🔼▶️🔽◀️. But I doubt it would be consisntetly great in different games with their own visual approach to portraying them.
Having more direct sign buttons on the other hand ✅️❌️❓️❕️ may be limiting to what devs want their game to be as it implies the check button is always approval, etc.
Math symbols, tho, ✖️➕️➖️➗️🟰 can be a universal and neutral set to pick from, especially if avoiding the confusing X button.
Also, ♤♡◇♧, in connection with older modes of gaming, but it should be tested for illegebitility between them and compared to arrows as three of them have vagualy triangular shape.
Also loss buttons.