some surprisingly late French ones.
Do you mind mentioning some names here?
I'm amused to find the very obscure 'durezze e ligature' genre which had its 'heyday & a half' in the work of Frescobaldi (as well as Ercole Pasquini, G.M.Trabaci, and G. deMacque) but only an obscure precedent, aftermath, and function. It too became a footnote in history only to appear briefly quite a bit later in a strange little piece by
a French one Louis Couperin, who happened to have a copy of one 'duresse' attributed to Frescobaldi, in a foreign hand. Willi Apel considers this 'genre' for a few pages in his book on keyboard music before 1700, but doesn't explain what this stuff actually is, or is for. I suspect they were experimental harmonic studies and not much more.