The proofs from his students aren’t really strong claims. Although the Tosafos Yom Tov lived in Prague and admired the Maharal, it doesn’t seem that he was actually particularly close to him. He does not quote him on anything outside of his published Sefarim. The only personal description we have is the Mishnayos groups, which was experienced by all of Prague.
As for R. Dovid Ganz, he was even less of a student. He finished his work, Tzemach Dovid, during the Maharal’s lifetime. His last mention of the Maharal is about him returning to Prague.