In the new Edge architecture, ST offers “multi component” devices as you’re seeing with the single tile, Main overall device and Switch1/Switch2 sub devices. This works nicely for some things but has some of the limitations as you’re pointing out. You can’t rename the subcomponents at this time And the subcomponents don’t work with voice assistants like Alexa - she only sees the top level item.
However, Inovelli is awesome and @EricM_Inovelli spent the extra time to add options to the driver to create Child devices for each of the subcomponents. The options are in the Settings menu.
This will create child devices that will show up as their own tile and will cross to Alexa and other voice assistants.
Another option would be to create virtual switches and use routines to mirror the state of the Switch1/Switch2 components to the virtuals. The virtual would be shared with Alexa and have its own tile on the UI. But that shouldn’t be necessary with the Create Child Device option that Eric gave us.