Coda-like notation

\version "2.24.4"
#(set-global-staff-size 21)

\header { tagline = ##f }
\paper  { indent = 0 }
\layout {
  ragged-right = ##t
  indent = 0
  \context {
    \Staff
    \remove "Time_signature_engraver"
  }
  \context {
    \PianoStaff
    \override StaffGrouper.staff-staff-spacing = #'((basic-distance . 12) (minimum-distance . 10) (padding . 1) (stretchability . 60))
  }
}

\markup \scale #'(0.75 . 0.75) {
  \column {
    \fill-line {
      \score {
        \include "1.ly"
      }
      \score {
        \include "2.ly"
      }
    }

    \vspace #0.7

    \fill-line {
      \score {
        \include "3.ly"
      }
      \score {
        \include "4.ly"
      }
    }
  }
}