Hi clarinetist,I think you should play Liszt's La Campanella it's really a cool piece!Just joking.... I wish I would be able to play that piece. Those are insane leaps right there.I don't know of any piece around the level of Bach inventions that has gigantic leaps.... Maybe someone else can give you a better answer.
Hi!You might want to try out Gymnopedie no.1 by Eric Satie It has some pretty big leaps.https://conquest.imslp.info/files/imglnks/usimg/e/ea/IMSLP136039-WIMA.f2cd-Satie_Gymnopedie_3.pdf