In Lakewood? You will be hard pressed to find a mainstream one that enforces masks. I would have to imagine that if that Rav had a shul it’s unlikely he would either. It’s one thing to strongly believe in it. It’s another to enforce.
I’m aware of quite a few Rabbanim in Lakewood who wear masks personally and encourage others to do so as well, but do not force it.
Rabbi Zimbal from Westgate does and has been for some time. I hear of R Micha Cohen from Oakley Hills, R’ Yitzchok Sorotzkin, and R Yerucham. Can anyone confirm/deny these?