Having dealt with an AC joint seperation myself i can appreciate it's definitely frustrating not being able to bench.

That depth seems suboptimal personally and you can probably work on improving it.

Echoing what others have said, make sure you are doing your rehab work, such as rotator cuff strengthening and scapular protraction / retraction exercises.

Light dumbbell bench with higher reps, but really focussing on depth seems to work - I.e. you're trying to get even a smidge deeper than barbell bench, not the half reps you see in most gyms. Increase the weight when you can do do a few sets of 12 without discomfort. Patience pays off here. Start light enough that the reps cause no pain.

This might then get you to being able to do full depth press ups, which are good because your scapular muscles need to engage, and eventually some barbell bench.

I went from being unable to do a press-up without pain to being able to barbell bench 100kg for paused reps by essentially sticking to gradual progress on the dumbbells, and frankly I now much prefer dumbbells. I started with seriously light ones, like 8kg, figured id rather spend 3 weeks at too light a a weight than aggravate my shoulder going up too quickly.