The two addons are “Lost Legion” and “Shades of Tesla”. Once people have a few games under there belt it’s very rare to remove the lost legion components as it really completes the game. Shades of Tesla feels like a bit of a departure, so isn’t mixed in nearly as often. To achieve a basic game setup leave everything unchecked, then check the “Remove Lost Legion parts” option. Lost legion has more stuff when doing Volkare’s scenarios, but a conquest scenario including lost legion will still be fine for learning really.

Thank you!