midi the notes/chords of each instrument (as iReal Pro plays through the song)
MusicXML the chord symbols in the form of the song as you see it in iReal Pro (bars, repeat barlines, voltas, DC, DS Coda etc.)
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Import into your notation program (Sibelius, Dorico, Musescore etc.) or DAW (Logic, Cubase, Notion etc.) for further development.
Examples
1 Sibelius Ultimate (Mobile version) MusicXML
Chromebook: you can import the musicXML file from iReal Pro and import it in to Sibelius to create a chord chart with a melody
2 Cubase, import the midi file, add extra tracks to record a melody or improvisation, adjust midi timing to create specific rhythms, map each instrument from iReal Pro to any available sounds.