I am not sure as to wide, but for the most rear-ward cleat placement available, Fizik Vento Infinito have been great. I couldn’t get the clear rear-ward enough with SIDI or Specialized. Not a problem with the pair of Vento Infinito Knit Carbon 2 that I have. I actually can go even more towards the heel if I wanted to.
Fizik tends to run narrow but they do have wide options. I can not say if they are “true” wide as noted above or just a wide upper.