The lack of credits on Viz releases started with Ranma ½ HD in 2014 and things have been sloppy ever since because they can be random on if they include them or not.
-Included in Limited Edition Blu-ray booklets with only the main staff and casts (Ranma*, Sailor Moon, Sailor Moon Crystal, Death Note*, JoJo's Bizarre Adventure, etc)
-Included as part of a list of disc extras (One Punch Man, Hunter x Hunter 2011, Mazinger Z Infinity, Sailor Moon S-SuperS movies & Crystal season 3, etc)
-Broadcast on TV, streamed on Hulu (Crystal 1-2) or screened in theaters (R movie which is what's currently streaming and on Madman's release).
-No credits at all and you'll be lucky if you get a response if you e-mail them for a list.....I'm not even kidding, this actually happened for a show.
* - With Ranma, Death Note and
Bleach, they had fully translated credits previously so I feel these had it the worst.
As for Sailor Moon, it made sense why they didn't use creditless versions for credits like the old days because a number of them were never released (and IIRC, some others were missing) but they really should have went the disc extra route. In their season 1 set of One Punch Man, they included credits for all 13 episodes separately in it's extras.....which was a bit overkill since it's basically the ED video on all of them but it does help since in addition to new characters, people tend to change on the staff side of things after a certain number of episodes so they should have done that here.
EDIT:
Oh right, there's also the Bleach spinoff, Burn the Witch, which had it's main staff and cast hidden under the plastic of the Limited Edition digipak it came in.