Rimas Dissolutas is a troubaderic verse form in which verses rhyme with each other instead of having the lines of each verse rhyme internally. A poem in quatrains would have a rhyme scheme of ABCD ABCD, etc. Lines can be of any length but are generally isosyllabic while verses can be any number of lines.
Rime couée is a French stanzaic verse form with six-line stanzas that each have a rhyme scheme of aabccb. The third and sixth lines are hexasyllabic while the rest of the lines are octasyllabic. This, paired with the rhyme scheme, puts a unique emphasis on the middle and end of each verse.
The descort is an unusual poem form in which every line is expected to be different from every other line. This is commonly achieved through length and meter but can be taken to the extreme by having no two lines share the same end sound, syntax, or potentially even language.
The chanso is a poem and song form (lyrical verse) that was popular among the troubadours in medieval France due to its variable-length stanzas and metrical consistency from verse to verse. While the form hasn’t seen much success in English, some cansos remain famous in France well into the modern day.
A sestina is a very specific verse form of French origin, consisting of six stanzas with six unrhymed lines each, usually concluded by an envoi with three lines. Sestinas originated with the lyric poets (troubadour poets) of Southern France.