Afaics you have these samples inside song-editor?
Why do you not use Pattern-editor?
https://docs.lmms.io/user-manual/3-navigating-lmms/3.8
Sure you still need tracks in song-editor, but that is not wasteful at all
Beats belongs in Pattern-editor.
Afaics you have these samples inside song-editor?
Yes, that is so.