Based on a popular 17th-century harmonic ground, Frescobaldi's Bergamasca is a masterpiece of Baroque variation form. It demonstrates his ability to transform a simple dance motif through increasingly complex counterpoint and rhythmic invention.
Maintaining clarity in the independent voices while executing the required Baroque-era ornaments is the core technical hurdle.
Comparable difficulty and character — good candidates for what to learn next.
Bergamasca, F 12.46 is rated Henle level 4 of 9 — intermediate repertoire, roughly ABRSM grades 5–6. In the RCM system it corresponds to about level 6.
You should be comfortable at Henle level 4 — meaning you can already play level 3–4 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Bergamasca, F 12.46 lasts about 3 minutes.
Bergamasca, F 12.46 is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include Capriccio di obligo di cantare la quinta parte, F 4.11 by Girolamo Frescobaldi, Capriccio di Durezze, F 4.09 by Girolamo Frescobaldi, Capriccio di obligo di cantare la quinta parte senza toccarla by Girolamo Frescobaldi — see the full similar-pieces list on this page.