Off the top of my head, I have the 8L-35, 6R-15, 7S-26, and the 7S-35.
The 8L-35 is in the MM 300 and I haven't measured it in a while but it was always running about +12 to +15 seconds a day which seemed like poor performance for what is otherwise an awesome watch. This is at the top end of what this movement is rated for but for the cost, I feel it should be better. FWIW though, I will say that I don't think I've worn this consistently for more than 2 days in quite some time so that may be influencing the accuracy. I have seen many reviews with much better accuracy than mine so maybe I'll have to do an experiment with this one and wear it every day for a week or two and see if it settles down some.
I have the 6R-15 in the SARB017, Shogun, and a Blumo (that I no longer have) and I probably gain about 10 seconds a week on those on average, maybe a little more.
I have the 7S-26 in an Orange Monster and an SKX007. The Orange Monster gains maybe 2 or 3 seconds a week while the 007 can be all over the place.
The 7S-35 is in an old titanium Samauri and that one is pretty consistent at +10 seconds a week.
Like I said with my MM300, one of the problems with all of my Seikos is probably that I have too many watches so nothing really gets worn for a long period of time. I've read that that can be problematic for the accuracy and might explain why some of them can be so fickle. Maybe it's time to thin the herd?
My Helson Skindiver has a Miyota 9015 and I can pack that away unworn for a month and still consistently count on +5 seconds a week when I finally put it back on. That consistency means a lot to me.
Except for your marine master, All of your watches are getting unbelievable accuracy, well beyond chronometer specifications.