This article from The Cut offers mnemonics to tell one white male from another. [A Guide to All the Indistinguishable Men Running for President, by Madeleine Aggeler, July 31, 2019]
"How can I remember him? He looks like if a thumb split from the other fingers and went to dine at Hooters alone." https://t.co/BPekHFJClv— Callie Beusman (@cal_beu) July 31, 2019
The six normal white male candidates who aren't either Biden or Bernie are Michael Bennet, Steve Bullock, John Delaney, John Hickenlooper, Jay Inslee, and Tim Ryan. The "thumb" is John Delaney of Maryland.
As far as The Cut's Madeleine Aggeler is concerned, they might be "The Five Chinese Brothers".
Those guys actually did look alike, but it's now racist to say so. None of that sensitivity is ever applied to white males.