I added an external link to the OC forms, but here we go! The original forms of the four, Ryubo, and a new OC I have no clue about what to do. (I swear I hadn't meant it. It was supposed to be a drawing of Ismaya but I forgot that he was actually someone in the anime-)

venusaura

Upper left - Zetsubomon

Upper right - Bushomon, then its evo Bushidomon

Lower left - Kiramon

Lower right - Oujamon, then its evo Yoakemon

Left - ??

Right -  Ryubo Tamada