Here's a different line. The theme is obviously Ice, but here's a few clarifications. Kyaromon>SnowGoburimon is the flimsiest, but I based it on the elongated ears, and the see-through look being more representative of Ice for this line. Snowgoborimon>Sorcerimon is next, and I based it on the pointed hats, and the fact both wield weapons of a sort. Also, both the other Goburimon variants can become Sorcerimon, so I figure the Ice Elemental one can too. Sorcerimon>Panjyamon X is because they both wear capes, have similar color schemes, and Panjyamon X's Axe resembles a large snowflake at the end, like Sorcerimon's staff. Panjyamon X>Hexeblaumon is because they both wield weapons made of ice with Hexeblaumon's even somewhat resembling the axe, although turned into a flag. Also, Hexeblaumon's white hair seems like a nice evolution of Panjyamon X's mane, and both have three claws on their feet. I think it's a pretty nice line myself, but I may be seeing connections where there aren't any in some of these cases.