For cheaper brake pads nearly any nutted brake pads will work nicely on older Dia-Compe brakes. I would say look for ones with multiple adjust washers which allow for better setting of toe in and setup.
https://www.amazon.com/Jagwire-Mount...s%2C844&sr=8-3
https://www.amazon.com/Kool-Stop-Sup...%2C2074&sr=8-5