Richard Wagner

His most popular operas are:

• Der fliegende Holländer #25 (2 Jan 1843)
• Tannhäuser #53 (19 Oct 1845)
• Lohengrin #63 (28 Aug 1850)
• Das Rheingold (22 Sept 1869)
• Die Walküre #36 (26 June 1870)
• Tristan und Isolde #39 (10 June 1865)
• Die Meistersinger von Nürnberg #77 (21 June 1868)
• Siegfried #50 (16 Aug 1876)
• Götterdämmerung #59 (17 Aug 1876)
• Parsifal #54 (26 July 1882)

All of these operas are in the 100 most performed.  It is interesting, at least to me, that his most popular opera is the one most like a Grand Opera. There is no listing for librettists because Wagner wrote his own librettos.