Anyone have a link for the solid steel lug nuts for the 2022 320S Boondock?

CCC

Mine are 19mm but several offering on Amazon have different "thread pitches"? 

Mickerly

Your local auto parts store will have some. Take one in to match the sizes. Since the auto world is still "between" English and metric, your 19mm lugs are also 3/4in.

Passport

If you want simply "lug nuts" take the tin chrome off of the current lug nuts.  Some of mine fell off of the old 2016 model Tab I had and I took the rest off.