Period distributions of the overall population of CVs (Ritter & Kolb 2003, seventh edition, updated in 2014), CVs with evolved donors (provided by B. Gänsicke, priv. commun. 2025), and AMCVn-type binaries (systems without detectable hydrogen, this work). Magnetic CVs and CVs with orbital periods below the non-degenerate period minimum were excluded from the CV period distribution. The orbital periods of evolved CVs cover a broad range; the shortest are ≲70 min, and therefore fall into the period range of this catalogue.