You can sniff SNI which will still reveal hostnames. In certain cases though, you can use 'domain fronting'. That is using a different Host in the HTTPS header

You can sniff SNI which will still reveal hostnames. In certain cases though, you can use 'domain fronting'. That is using a different Host in the HTTPS header than is included in SNI. If that other hostname is served by the same ip address and certificate, then that server might just forward your HTTPS message to the host requested in the HTTPS header.