I’m starting lose track of this thread. If you’re focused on Bitwig, the recommended way is DrivenByMoss. Btw., if a plugin doesn’t provide remote control maps, you can always create them by yourself, either per instance or per plugin. Those will also be accessible via DrivenByMoss.
If you’re using Reaper, you might want to check out my plugin KnobConnector.
You can do this independently of your DAW by setting up E1 presets that follow the MIDI specification of the plugin you use or by changing the plugin’s MIDI assignments to whatever preset you use on your E1 (if the plugin supports changing its MIDI assignments, not super common, u-he Plugins are very flexible in this regard).