I often create QR codes of the private key of a Bitcoin address from Electrum. Also, many Bitcoin ATMs produce the same thing. Currently to import the private key by scanning the QR code, I use the Guarda wallet to scan the QR code which works for P2PKH private keys (currently unsure if it works for P2WPKH as well), and then send the funds to my Cake Wallet.
It would be nice if i could import either of those encodings using Cake instead.