There was a request for a Dragon lineage chart in the Panther thread so i made one. Does not have any custom variants, didn't see point in including them.
Upgraded variants to right, sub-variants down is the general rule here, though can't be said to apply to the Dragon II and Great Wyrm.
Larger pic if additional clarity needed:
http://i.imgur.com/MDBjQKE.pngI didn't include the Shadow Hawk though it is important to note the Dragon was designed as a replacement for it. According to TRO3025, the Dragon was designed as an upgrade for the primitive Dragon but later timeline adjustments designate it as a replacement for the standard 2H... which doesn't really make sense considering the SLDF was looking for a Royal upgrade...
The Great Wyrm is included as it is based on the Dragon. Given the UAC/2, and the fact 1C was proposed for the SLDF, i figured the Clans would use the DRG-1C as a basis for the Great Wyrm.
The Dragon II is functionally quite different but was included due to its implicit lineage. Given the 11R being a limited production upgrade, i designated it as a sub-variant rather than an upgrade/newer variant of the Dragon II.
The Dragon II is described as a replacement for the original Dragon series, not the Grand Dragon series.
The Grand Dragon 10K is noted as being upgrade to the 7K in RS 3145 NTNU. I will note that the snub-nose PPC may indicate influence from the 9KC
The Dragon 7N is a bit weird case as it doesn't really feel like a direct upgrade to 5N, but i figured it would be that anyway. It is actually also an export model to Lyran Alliance, has its origins in MWIV official (non-MekTek) Mech Packs.
Done in Paint, if someone wonders. Making arrows by hand (line tool or not) is PITA but can't really use image editors.