Cook's Illustrated
Ultimate Veggie Burger from 2005 bears a striking [family?] resemblance to Kenji's. The CI burger is time consuming, tasty and filled with mushrooms, lentils, leeks, onions, bulger, cashews and PANKO. I think I recall being less than thrilled with the quality of the thawed product in the second and third round. Recipe upon request.
I am not sure why multiple cups of panko are needed in veggie burgers, so I have been looking at this
Chickpea and Veggie Burger that really is mostly veggies.
OTOH, I may just make falafel.