We actually did something like this for non-native English speakers a few months back. Check out https://accentoracle.com (most mind-blowing if you're a non native English speaker)
I'm terrible, according to the program. My Italian is Russian or Hungarian or Swedish, my Australian is English.
New party game unlocked.
accentgame.xyz
Edit: Tried it a few times and also got English as an accent. Pretty fun application!