Filament - What's Inside The Course

Every admin panel purchased from conde canyon has its own documentation, I can't answer that in a comment here, there's no "best way" for "any premium admin panel", they are all different.

In this course, I'm explaining the filament integration, which has data table as a part of it.

Povilas i'm just starting this course, my question is are there any downside to using a new adminpanel like Filament compared to using something like AdminLTE?

They serve different purposes. AdminLTE is just a VISUAL theme, HTML/CSS. Filament is a full-featured functionality adminpanel, with back-end.

No, Filament is based on TALL Stack.

But you can, of course, use Filament as a SEPARATE adminpanel so it wouldn't interact with your existing LIST project code at all.