I am also a Sony/Nauticam N85 shooter. I shoot an A6100 in an A6400 housing (the cameras are physically identical)
My main lenses are:
1. Tokina 10-17 (via Sigma MC11 adapter, N85-N120 adapter, and Zen DP100 mini dome)
2. Zeiss Touit 50mm macro (using 2x 17mm extension rings, and the Macro Port 40 with knob that I can use with the 1650 if needed)
3. Kit 16-50 (rarely used)
Per the older port charts, here is the port for the adapted Canon 60mm macro:
Nauticam Macro Port and Focus Gear Set for Metabones Canon EF Lens to Sony NEX Smart Adapter II and Canon EF-S 60mm f/2.8 Macro USM (backscatter.com)
I'm not sure why this is no longer on the port charts, but the flange to housing distance hasn't changed in the newer cameras, so there is no reason it shouldn't work. I looked at going this route, but it's an expensive port and I was able to get my zeiss lens and extension rings for less than the port alone.
As a note, due to the small port opening, many of the adapted lens require you to install the camera in the housing, install the lens from the front of the housing, and then the port over the lens. I have to do this for my tokina.
I added Nauticam's M16 USB-C bulkhead, so I can charge my camera with everything assembled and vacuum pulled instead of disassembling to change batteries.
Let me know what questions you might have.