From the IMI Citizenship Catalog

NOTE: For purposes of citizenship by marriage, many countries prefer one gender (usually women) over the other. Some countries offer shortened naturalization periods for wives but not husbands of their citizens, while others may offer immediate citizenship (by declaration or registration) to wives and no path to citizenship at all for husbands. In cases of differences, we have listed the terms for whichever gender is favorably treated.

¹In this context, "marriage" can sometimes mean common-law spouses, civil union participants, and so on.
Chart: IMI (imidaily.com)Created with Datawrapper