He’s not a saint yet (currently a Servant of God), but Archbishop Fulton Sheen was a HUGE help for me when I began my conversion from the LCMS. So many people know him (or at least have heard of him) and find him very non-threatening.
St. Bernadette was also a huge help for me in converting, due to her simplicity and innocence.
In the same fashion Father Michael J. McGivney, the founder of the Knights of Columbus. He founded the Knights of Columbus to originally take care of parishoners and now it has become one of the largest charitable organizations in the world. He is a shining example of charity and what the Catholic Church is about.
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