The lid isnt a driver for looking for a new fridge. I want a dual zone, but want to make sure it wont be worse with a 1" taller National Luna
I could live with it as is and have for 5 years
A little bit of a diversion from your basic question....but just some thoughts on the NL60 Twin.
-Also a little different approach to fridge placement.
I keep my National Luna 60L Twin in row 2....so I don’t have the same lid height Q as you...but... The NK 60 Twin is absolutely awesome. Having separate thermostat controls for each side is extremely effective.
It’s what allows me to offer ice cream on the trail...and chocolate milk at the same time.

Complete control over freeze or cool...even in the heat of Moab summer.
By the way... you can swap in hinges that release the lid in the NL too. I don’t need them bc of my setup, but they are zavailable.
Beyond the fridge and lid height Q though... If you don’t need your full second row, the 60 Twin fits nicely on passenger, keeping the 60% side of row 2...OR...fits even more nicely if you put it behind driver, keeping just the 40% side of row 2. I had the 40% seat in at Ouray this Summer at KCDC, which was perfect when we needed to transport an injured motorcyclist off the mountain. Having that part of the 2nd row saved the day.
Another huge benefit of running the fridge on the floor of row 2 is that fridge access is way easier, quicker, and even accessible while rolling by your front row or 2nd row passenger. Super handy spot, and also makes more efficient use space in the rear cargo bay.
Behind driver with 40% seat setup:
And here is is on passenger, keeping the 60% side of row 2:
Both arrangements allow sleeping in the back when traveling alone.
Love the National Luna.