Those represent the extremes of my last pan roast. If the middle bean is 50%, most of my roast was beans at 40%.
The leftmost one tasted a little fruity and chocolatey. The middle one tasted baked and toasted and the rightmost one tasted more like burnt toasts, the only one with a frank bitterness.
My first assumption was that they’d made coffee flavoured cookie dough with different levels of roast (think my mind turned the chopping board in to a countertop)