A great drummer, but I wouldn't put him with Bonham, and certainly not with Baker.
But that is just my opinion.
You really can't compare and rank them due to their style... they have all contributed to the music and drumming community in a different fashion that has affected their fans and detractors in various ways.
I was saddened and shocked by the loss of Neil not only as a long time fan but as a drummer as well. I had the opportunity to meet the band and talked with Neil before the tragic death of his daughter then his wife and subsequent withdrawal from the Limelight. With drummers it's a brotherhood, it was Neil who organized the Burning for Buddy tribute and who humbled himself amongst the other drummers contributing to the project and the live performances... Neil idolized Bonham and Baker neither of whom would have really stepped up due to their own personalities/egos... then looked in the mirror, analyzed himself after seeing the skills of the other drummers and recreated his drumming style by switching his grip from matched to traditional late in his career.
Don't get me wrong, I loved Bonham and Baker way before I got my first pair of stick and then drum kit but it was Neil who drew me in with his intellect. Later on after I studied the styles of each drummer and went into their lives more I realized that Baker was truly an asshole and Bonham was a raging alcoholic but they both shared immense egos... but when you put them behind a kit they were home. I've said my peace.
The passing of Neil has saddened the fans of Rush and the drumming community, when they went on tour for the final time it was Neil who called it not Alex ... the 3 put on an amazing tour for their fans, I was a part of it as I was for many a concert here in Toronto and many other places going back to the Moving Pictures tour at Maple Leafs Garden and my first experience.
We will miss you, thank you for bringing your music into our lives.
VBB