Hi

can anyone recommend a brand which offers extra wide shoes with SPD cleats? I am currently using the widest Lake gravel shoes available and they are right on the edge of being uncomfortable (width 104mm at Size 39).

I assume you have a very large toe because the Lake are amont the widest in the market.
Have you tryied to enlarge the shoes asking a shoemaker? They have special equipment to creare more room

I also suggest Shimano S-Phyre RC9 (RC903)

I guess I just have wide feet from wearing barefoot shoes and martial arts...