I don't (think?) I have BP but i'll chime in.

I've worked both regular hours, and shift work for a number of years, in varying amounts, and at stupid times as well.

For sleep and stability, either a repeating (less than a week) Staggered shifts WITHOUT nights, that fall naturally (i.e. Early, mid, late, rest days) or a "stable" X days a week between 8-5 repeating.

I found things get hairy when it's a staggered shift pattern involving nights that only repeats, say, once a month. Then your brain and body never know when or how to catch up with what is going on.