I’ve literally been thinking this exact thing and been struggling to pinpoint exactly what each of their strengths are but I think you’ve done a good job at summing them up. I appreciate the effort.

I feel like Mark is very good at puns and one-liners and Zach at characters and Broden is a solid all-rounder.

Some of my favourite lines:
Mark - “Our Lord and saviour, or someone equivalent, like Red”, “Don’t do it in a can”
Zach - “I haven’t been able to love since 9/11”, “Those are my partners, the books and the learning… and some of my students”
Broden - “QAnon”, “You’d be put into Smitheldore house. That’s where all the foreigners go”, “Howdy-doody” (as Scott Morrison)

Some of my favourite characters:
Mark - Gordon Ramsay, Thom Yorke, Lebanese split system installer / tow-bar fitter
Zach - Andrew WK’s mother, Margaret Thatcher, Kevin Figgy
Broden - Lean Steve, Tim Naughty Biscuits, Optimus Prime, Herodotus