Well, I have only single example based on personal experience. My AA Carissa Sig had 6922 and 12bh7 drivers vs 300B drivers in Coincident. A bit of time went by and system used at that time had changed somewhat in between AA and Coincident in system, but right off bat I thought Coincident had a bit more natural sound quality. Now, was this due to 300b vs 6922/12Bh7 driver tubes or system changes, or aural memory faulty? I recall thinking 300B had something to do with this. So, yes I suspect driver tubes make a difference. But important point here, I easily heard differences in power tubes with both amps.
I have no doubt there is magic in getting just the right driver and output/power tube to sing in tandem, I can't give specifics as to which combo is best for any particular amp, system or listener. Hopefully, our amp designers have chosen best combo for that particular circuit. It would be cool to have an amp that could use multiple driver tubes to hear effect of these tubes.