Gaban, Sunbell, Nozdon, Taro and Spencer might appear...
When they went up against the Whitebeard Pirates in Chapter 966, the Roger Pirates seemed to have a battle formation which included First Mate Rayleigh in the front. Assuming that sort of formation is planned out beforehand and follows some sort of rhyme and reasoning to it, perhaps it’s possible that those deemed to be the strongest go out in front first or it was that those most willing and anxious to fight considerably strong enemies make their way up to the front.
In any case, Petermoo, Nozdon, Taro, Scopper Gaban, Doringo, Ganryu, and Millet Pine were all seen leading the charge head first alongside Rayleigh against the Whitebeard Pirates. Whether or not this is meant to tell us they’re the more reliably strong of the Roger Pirates, reminiscent of the Straw Hat Pirates’ original monster trio, I’m not sure.