I would have to say Jim Henson, Frank Oz, and Caroll Spinney.
Jim- I can relate to how shy he is, but how he opens up when performing. He's a very gentle soul, his characters have a lot of personality, and I just love the way he moves his characters. Idk, something about his manipulation is pleasing to watch
Caroll- What can I say? He's Big Bird and Oscar-two of my favorite characters of all time
Frank- Not only is he a fantastic performer, but he really puts so much thought into all of his main characters that they almost feel real. He's also made me laugh more than anyone of the others. His ad-lib is always on point.