The NeXT Dock was removed from Rhapsody and Mac OS X DP1/DP2. The Mac OS X DP3 Dock was a new creation.
See http://www.rhapsodyos.org/misc/docs_and_faqs/Misc_FAQs.html which recommends a third-party dock called Fiend —
Q: Is the OPENSTEP Dock going to be available in Rhapsody?
A: It is actually still there in 5.0 to a degree. In 5.1 and later it has been replace with the Applications Menu (but you can get it back using Fiend[0]). Also you have the option to use the minimize to tile for windows like in NEXTSTEP/OPENSTEP instead of window shade.
James Thomson worked on the OSX dock but dragthing had nothing to do with inspiring it.
Not sure what's going on here.
I didn’t know this! I’ll read up on that as the name is familiar but I have never used it!
I used to do some hack that made the Dock invisible because I found it to be intrusive and useless. IOW I preferred using the Mac with no docklike thing at all to using the Mac with the Dock. Apple long ago made my hack stop working so now I just live with the stupid Dock.
Is there any reason you don't just hide it and never use it?
https://www.dragthing.com/english/tenyears.html sez “The reason there wasn't much DragThing development between 1998 and 2000 is because I was then part of the team working in secret on the Finder and Mac OS X Dock at Apple. I felt then that the Dock would ultimately replace DragThing. However, for a variety of reasons, I left Apple shortly after Aqua and the Dock were announced in January 2000, and very little of my code survives in the current Dock.”