DDY voiced their biggest hits.
Crystal Ball - Shaw
Come Sail Away - DeYoung
Fooling Yourself - Shaw
Blue Collar Man - Shaw
Sing for the Day - Shaw
Renegade - Shaw
Babe - DeYoung
Best of Times - DeYoung
Too Much Time on My Hands - Shaw
Mr. Roboto - DeYoung
That's a 6:4 ratio in Shaw's favor (I intentionally didn't include Lady since that was before Shaw joined).
The guy who has really reaped the biggest benefit from all this is James Young. That's a guy who has ridden the coattails of others for 45 years without contributing much more than a menacing snarl. Styx without James Young is still Styx, but Styx without either DDY or Tommy Shaw doesn't reach anywhere near the heights that they did.
And while this is just my opinion, since the Styx breakup in '83, Tommy has lapped DDY so many times, it is not even funny. I can count on one hand the number of songs I like that Dennis has written since 1984. Tommy has tons between his solo records, Damn Yankees, Shaw Blades and Styx.
That's kind of a duh. Obviously, DDY missed almost all of what Styx has done since '83. Honestly, the only thing I know that DDY did outside of Styx was the song Desert Moon. DDY is a musical theater guy through and through. I know he dabbled in that area, but I don't think he ever really immersed himself in it, which I think he would have been great at. Honestly, for my tastes, none of the three were worth a damn without each other. Definitely a "the whole is greater than the sum of the parts" sort of thing.
You're right, of course, but hey...remember when this was The Triumph Thread?!