So, can you store them together? Yes. But you will regret it.
You’ll have bitter sweet potatoes that taste like dirt. You’ll have sad, rubbery russets. You’ll wonder why you can’t have nice things.
Separate them. Give them their own space. Your future self will thank you when your hash browns are crispy and your sweet potato fries are heavenly. Be the boss of your tubers. Your pantry deserves peace.