Musescore

Musescore4 is the most highly rated software for creating notation. It is pretty close to even Lilypond, but offers considerably greater flexibility. A nice bonus is that you can export to musicxml and then use Lilypond’s musicxml2ly (-l english)script to convert!

implode

A midi import left piano part in 2 upper and 2 lower staves. Select both uppers and implode them into a single multivoice staff. Then select that staff and implode again to combine the voices into a single voice. Repeat for the lower staves.

raggedy edge effect

Format > Page settings and play with staff space values.

hide empty bars

Format > Style > Score add hide empty staves rem don’t hide empty staves in first system