Hi Ryan and apologies for the late reply.
Odyssey wasn’t specifically designed to look like Photoshop, as the aim was to provide 2D animation and storyboarding tools within the Unreal Engine ecosystem.
So you’ll find similarities like the layer stack, folders, blend modes, selections and so on, as well as differences: the drawing tools are written in blueprint, there aren’t all the filters that Photoshop has to offer, we don’t use the same masks system and so on.
It’s difficult to make an exhaustive list of the similarities and differences, but perhaps you can tell me more about your uses-cases and then I can tell you how to go about it?
After that, if you’re missing something specific, keep in mind that Odyssey will continue to evolve and new options may appear in the future, depending on the feedbacks we receive, the patreons, fundings we can get, etc.