Total TLS
Total TLS allows Cloudflare to issue individual certificates for every proxied hostname. These certificates will protect proxied hostnames not covered by Universal certificates.
When issued, these certificates will have a type of Advanced - Total TLS.
Reference
Availability
Total TLS is available for domains that have purchased Advanced Certificate Manager and are currently using a full DNS setup.
Limitations
Because Total TLS does not issue certificates for any subdomain used by Cloudflare Load Balancing, we recommend using other types of certificates to avoid any potential downtime.