We’ve recently added a cross-reference PDF to the Cylindrical and Tubular Resources page  (direct link here) that provides a list currently produced of Grade 1, 2, and 3 cylindrical leversets offered by 10 popular manufacturers. These manufacturers include: Arrow, BEST, Cal-Royal, Corbin Russwin, DORMA, Falcon, General Lock, Hager, LSDA, Marshall Best, Sargent, Schlage, Tell, and Yale.
This cross-reference can be sourced to easily identify comparable cylindrical leversets series or to source and compare series unfamiliar to you.