do ORMs still target lowest common denominator ansi sql? I only know that EF doesn't - it has "providers" for each rdbms it supports and will liberally emit CT

do ORMs still target lowest common denominator ansi sql? I only know that EF doesn't - it has "providers" for each rdbms it supports and will liberally emit CTEs and db specific language features like "outer apply" or "join lateral" but then stupidly ignore powerful features like "for json" or "json_agg/json_build_object" which could eliminate the outrageously naive way it encodes 1:m and m:m results - it boggles how smart and stupid orms are at the same time.