Shaikh Quilliam, England; Lord Headley Al-Farouq (Ireland) in Islamic Review; Freedom Fighter and Gandhi colleague Mowlana Muhammad Ali Johar in Comrade in British India; scholar and Qur'an translator Allama Yusuf Ali, and others.
Allah bless them all.
Whatever else they all were, or were not, they certainly were not third-raters, as so many of us, Muslims of today, have or threaten to become.
And then some of the same third-raters among us have the gall to preach to the world that Islam is the best there is and that it is a first-rate product.
But the all-important question Muslims must answer is this: Why should a first-rate non-Muslim accept that argument about Islam from a third-rate Muslim?
As for guiding people to Islam, Allah, of course, guides whomever he wishes to his path, even if it is through a very flawed and less-than-stellar Muslim.