I spent the weekend making a full set of button prompts for all the current console controllers, and figured I'd release this for free for anyone who's got a use for them. These should be fully compliant for certification if you're shipping a console game, based on our experience there. They're high contrast and sharp looking and should fit in with any kind of modern or minimalist game-feel.
These should give you everything you need for Switch, PS4, Xbox One, Xbox 360, and PS1/2/3 prompting. There's also a couple blanks for style-matching keyboard icons if you need them.
The package includes vector and high-res raster artwork (both as a power-of-two sheet and as a set of individual 128x128 images). There's a preview at the OpenGameArt listing if you're interested, or get the zip file directly here.
EDIT April 5th: Now includes the full keyboard, as well.