I'm not to sure about the string from were Rhapsody DR1 starts. For example, it has a link from NetBSD to RDR2, but I seem to recall the man pages say many of the tools were ported from OpenBSD (okay, that is picky, but still). And then to have Mac OS X Server 10.0.x be on the same line as Mac OS X Server 1.x, I think not! They're are related by name only.
It was cool to see A/UX was remembered. I've been playing with A/UX 3.0.1 on my Quadra 700 lately (actually mainly the System 7.0.1 part) to compare a number of platform from around 1991-92. I can remember people telling me that PCs (running Windows 3.1) were better way back then. I don't see how they came compare to the Macs, Suns or SGIs of the same time period (or even OS/2 Warp on a PC for that matter).
I would love to see where CDE, X-Windows, Open Windows, KDE, and GNOME overlay on that history.