there should be a feature where i can make extra groups or replace groups. i would replace the 'By Artist' with 'Practice maps' or 'Chordjack maps' so that i dont waste time trying to find each one.
Select a beatmap > Press F3 / Right Click / Beatmap Option > Manage Collection
From there you can add a new collection and name it like "Practice Maps" or "Chordjack Maps". And you can find your collection in the song selection tab too.