I don't think so. - Let's Encrypt: doesn't support it since May 7 this year - Buy Pass: No longer offers free certificates, probably didn't have must-staple e

I don't think so. - Let's Encrypt: doesn't support it since May 7 this year - Buy Pass: No longer offers free certificates, probably didn't have must-staple either - Zero SSL, I didn't find any public links to check if they sign CSRs with it. - Google Trust Services: Same as above - Amazon Trust: Same as above, but it probably does.