mts_schema vs twentytwentyone

twentytwentyone is used by more websites in our catalog: 251 use mts_schema and 655 use twentytwentyone.

twentytwentyone sites have the higher median Ahrefs Domain Rating (mts_schema: 11, twentytwentyone: 18).

Between 2026-06 and 2026-07, mts_schema went from 0.03% to 0.03% of all tracked sites, while twentytwentyone went from 0.08% to 0.07%. mts_schema is gaining ground faster in our index.

No. A site runs a single WordPress theme, so mts_schema and twentytwentyone are mutually exclusive.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.