Honestly im super satisfied with the Sigma 85mm f/1.4 DG HSM Art Nikon F on my Z mount setup. It is a bit heavy tho but the autofocus works well for me even with the adapter. No complaints so far... just make sure your firmware is totally updated before the wedding. It feels a lot safer than waiting for native lenses that dont exist yet.

Checked specs on Sigma 105mm f/1.4 DG HSM Art Nikon F and Sigma 50mm f/1.4 DG HSM Art Nikon F. The 105mm has better MTF scores, tho the 50mm is easier on the wrists.

To add to the point above: I went through a similar struggle last year when I was prepping for some engagement shots near Rittenhouse Square. I actually ended up grabbing the Sigma 40mm f/1.4 DG HSM Art Nikon F instead of the 85 because the technical specs are just on another level. It was basically a cine lens design adapted for stills, so the clinical sharpness is kinda mind-blowing even at f/1.4. I was using it with the Nikon FTZ II Mount Adapter and the autofocus felt just as snappy as my native glass for portraits. Ngl, it is a total tank to carry around all day, but I was so satisfied with how it handled the weird lighting in some of those old Philly venues. If you want something slightly different from the standard 85mm look, this thing is a beast for wedding work.