That's not the point.
You released it without their permission, which is a very disrespectful thing to do.
Yes but I've fully acknowledged they exist and I've given my thanks. I'm sure they'll have no problem with me mashing a few files together.
I've given myself very little credit for doing this. It's not like i'm saying I made all this crap,painstakingly modelled it, and scripted it, I just took some files. I literally banged files together, man.
I really sincerely hope there isn't an issue here. If there is, one of the mod creators can ask for their content removed, but it'd be kind of a richard move.