Well, in that case, I apologize. Maybe this is just a peculiarity of the HOMM community, although it surprises and disappoints me.
For several years, I was an active member of the modding community on Warband, and there, the absence of a detailed list of credits for a mod was rather an exception, especially among top-tier mods.
"Piracy" was encountered either among the Chinese (who love to extract resources from everywhere and put them into their mods) or among small mods, whose authors apparently hadn't quite "gotten the hang" of modding ethics. But this was always suppressed: such mods were banned on the first request, and the author faced shame and disgrace.
In addition, it was generally not accepted to take anything from mods, but only from OSP materials, which some authors specifically released for anyone who wanted them and found them useful.
So, personally for me,
And simply mentioning/thanking the original authors is not enough; you need to have written permission from them.
These are the modding standards that most major modders on Warband follow.
I understand that it may seem absurd that copyright holders are still clinging to assets and engines for games that are decades old instead of releasing them for open use long ago (because they would lose nothing from it and would only gain the love of fans), and that the only way to legally obtain a model, say, of some creature or armor for your mod is to create a similar reproduction from scratch, but these are the rules.
Now, let's compare the mods of a game whose developers intended to have a platform for creativity when they made it, and the mods of a game that the developers made simply as a game (bought, played through the story, beat the AI on maps, deleted) and didn't even think about modding.