The 3 Realtech MD' i've had for years, kept them in the AMF format as they seem to play ok in modplug. Maybe Milkytracker can do a better job of converting them. Still a couple of seemed garbled but play somewhat better in milkytracker.
Tales from the Grave
Seems to play ok in milkytracker. Probably never kept them back then as there as nothing that would play or convert them?
Tiny Tunes
A few chiptunes by Benji, Axel and Rez (didn't have those)...

Marshmellow Dreams
Looks like the .GDM play ok in Milkytracker, only tried a couple..
Difference, Inferno & Nothing On
Unpacked the executables but didn't find anything. Not sure if the modules in these haven't been released as standalone modules as I noticed Ryan Cramer' Geometric Shadows in the Renaissance one.
No download link working for Drastic Scream. All the others, beyond me.
And, I like that Speckdrumm musicdisk, some very nice .it modules from Omega in that one. Wonder if they have been ripped yet or released elsewhere?