These Digimon lines have been formulated by me. They have been inspired by the percentage cards, the anime, back stories of anime, cds, manga, cards, and games. I'd like to point out that I follow my own rules with evolution lines. I think the rules are pretty straight forward and decent. Such as:

                I believe Armor Digimon can only evolve from their set Rookie. The Armor level has been recently converted into a stage equal to Champion.
                I believe Hybrid Digimon have a set line. H - > B - > H + B = Fusion -> Zeta -> 10H + 10B = Susanoomon.
                I believe X Digimon can only evolve to or from other X Digimon. < Ex. Agumon (X) evolves to Greymon (X) > Red border cards can evolve to or from blue borders as long as the evolution doesn't break the rule stated on this line.

Everything starts from a Digi-Egg. Then Fresh, In-Training, Rookie, Champion, Ultimate, and finally, Mega. These are all Bandai level terms. Fresh Digimon were called Baby. Armor Digimon only appear from Level 3 Digimon with Digi-Eggs. Fusion and Jogress have both been dubbed to DNA Evolution. Each Digimon does have a correct path in evolution. Agumon's first line shows Greymon to MetalGreymon, but the second shows Greymon to SkullGreymon. This is to show that the first line a Rookie's name appears in is what I believe is it's correct path.

Apocalymon is a bunch of crappy data fused together to make a bigger piece of crap. Therefore, no line for him.
Calumon is not a normal Digimon.
Lucemon Larva is the living evil Digi-Core of Lucemon Satan Mode

If you have a better evolution line for a certain Digimon, please tell me. I'd love to hear your opinion