Magic Flute is a world success, it counts as the most played opera.

the “side operas” thus have less success:

Z0 24 years 1790-1814 non-stop success over 24 years. Since re-discovery 1998 ca 13 performances.
Z2 only in ca. 13 theatres just one time or a few times, see wikipedia, with BIG international success 2012 @ Salzburg Festival
Z3 world premiere 1891 concertante in Hengelo/NL and one scene 1939 for the 80th birthday of Goepfart
Z4 1797-1801 64 performances in Vienna, then Ständetheater Prag 1815 two performances.