I agree with yall who say Prodigy had one of the greatest rap voices ever. Beyond just the overall skill i enjoy & sometimes draw to artists who have a voice/energy i resonate with. And energy doesnt mean some goofy shyt and acting all "turnt up" (hate that sayin) as energy.
But using some examples of artist with voices/energy i fukk with.
You have your Prodigy, especially between 1994-1996, but even somewhat up to about 2000. But clearly he grew, alcohol/drugs, countless performances have effects on you. But him, cats like Method Man, DMX, Scarface, Billy Danze from MOP, Game as he came out had a voice that stood out which is part of why he was marketable & had listeners, even tho he sounded like various rappers he still had a dope voice especially on Documentary using songs like Start From Scratch as an example.
Jada had a cool voice. Jay Rock has a dope voice. Remember naysayers saying he sounded too much like Game at times tho. Snoop, especially on Chronic & Doggystyle had a smoother voice. But as above the road, weed etc takes a toll. And then he changed his delivery & flow on Doggfather too.
Sticky Fingaz is another one. Xzibit too. Guru..
Some examples. Voice isnt everything, but it is still an important instrument.
I knew just off GP of the post-death 2pac fanism, people will say him too. But i'd disagree. I think it was more of his delivery than voice. His voice didnt stand out too me.