U. Glass was definitely one of my favorite voices followed by Dan Sydlik.
Remember Dan's usual morning worship intro? "How good it is to be alive and serve the true and living God!!" LOL
And a hilarious voice at Patterson was Brother O'boyle's voice. I don't remember his first name. But if you can picture the Sean Connery voice during a prayer or a talk, then you know who I'm talking about.
And Doug Chapel has an interesting voice. You usually will hear it narrating the main articles of a magazine, generally the Watchtower - Public Edition.
CoC