I dislike the term stainless steel. It is a spectrum, simple as that, and except for steels like H1 and LC200N there is no stainless steel. Chromium content is not a good measure either now that we have steels with ridiculous amounts of carbon. For example, S30V is considered stainless and I have had it rust on me quite easily and have even had instant staining from cutting up a banana yet it is considered stainless. On the other hand Cruwear seems more stainless to me than S30V but most consider it a semi stainless tool steel. Then you have ZDP which has tons of chromium and by that measure should be stainless but since it has an astronomical amount of carbon it is semi stainless at best. I have had brown spots appear on CTS204P when I put it away dirty for a month and it has a ton of chromium but also a ton of carbon. I also think that some of the other alloying elements have an effect on corrosion resistance although there is little info out there to support that. That is the only way I can explain the resistance to corrosion that I have seen in Cruwear or even HAP40. That is also the only reason I can explain the extreme resistance to corrosion that S110V has because with it's very high carbon content it is still very stainless. On the other hand Maxamet has gobs of other alloying elements including lots of cobalt but only a modest amount of chromium and it stained right away so who knows, maybe those other element don't do anything or maybe it depends on heat treat whether they make a difference or not. Even basic steels like 1095 which lack chromium can vary depending on heat treat. I have knives that are 1095 that rust almost instantly and I have others that seem to resist it quite well.
Anyway, it seems to be quite complicated in the end with varying heat treats, varying carbon contents and the possible effects of other alloying elements all coming into play.
If you like the behavior of carbon steels but also want something almost stainless then I suggest Cruwear.
Disclaimer; I am not a metallurgist nor a knifemaker but simply a geeky guy who likes knives...