So Tom Bombadil was mentioned by name 143 times? I bet at least 130 of them were him referring to himself in the 3rd person on average once per sentence.
With the Appendices included, I'm kind of surprised Al-Phazaron didn't make the cut. He wasn't in the main series, but was probably the most mentioned Numenorean in the Appendices, between the defeat of Sauron and the attempted attack on Valinor and subsequent destruction of Numenor
The Balrog of the Moria doesn't have a specific name.
Also, in reality they aren't a different race as they are maiar just like Gandalf and Sauron.
No Bullroarer Took though? I swear he was mentioned a LOT in the beginning.
Lobelia 16
Erkenbrand 13
Grimbold 5