Since you are interested in Offenbach / Gulda: Cello Concertos, here is a list of other items that you may find interesting.
Elgar: Cello Concerto / etc
Sheku Kanneh-Mason (cello), London Symphony Orchestra, Sir Simon Rattle
[ Decca / CD - released 31/Jan/2020 ]
Award-winning British cellist Sheku Kanneh-Mason returns with Elgar, a brand new album of works anchored around Elgar's Cello Concerto - arguably the best-known work in the classical canon written for solo cello.
J. S. BACH
Six Evolutions - Bach: Cello Suites (2017 recording)
Yo Yo Ma (cello)
[ Sony Classical / 2 CD - released 5/Sep/2018 ]
"I don't think he has ever made a greater recording and his personal booklet notes help provide a conceptual setting for his playing." Gramophone Editor's Choice Awards Issue 2018