Guys like Rosalie and Conolly are good for their respective overall band sounds, but far from "great" players.
Standouts are Rod Argent, Brian Auger, Jerry Lee Lewis, Ray Manzarek and vastly underated if somewhat cheesy; Burton Cummings (listen to that live TV stuff Guess Who CD that came out awhile back). Tony Ashton and Graham Bond are pretty dang great too.
Not to mention the Nicky Hopkins of this world, etc. etc.
Soul players are a whole other bag - usually much "tastier" players with more of a groove as the music isn't usually (quite) as frantic. Booker T. and Preston are prime examples (though they could probably play rings around most rock players).