Thank you for the feedback and appreciation; as a relatively new member of this community, it is good to receive a heads-up.

My practice thus far has been to label stem files containing others’ sounds with their name (e.g., “Manipulated sparky”) such that the derivation histories for the remixes of which they are parts also indicate the sources of those sounds (e.g., “Ethereal groove” by sparky is indicated in the derivation history of “Ethereal Groove (Dissipation Remix)”
by Ben Blohowiak). I have yet to exceed two such sources in a given remix, and have tended to focus on only one (as in this example).

My understanding is that it would be appropriate to provide attribution to sparky and me if you used “Manipulated sparky.” In the case of this remix, there are eight other stem files that do not contain another’s (e.g., sparky’s) sounds. I’ve noticed that some Mixters will use such stems and attribute them to me (which seemed acceptable practice from what I could discern).

Anyway, that’s the past; I’m open to doing it differently in the future and welcome input regarding how I might contribute to the community more beneficially.