The Super intense US marines are for the most part just well trained light or medium infantry as far as I know. Thet do have their share of special forces like the force recon, Scout/Snipers and so on but the line units are just plain old well trained infantry. Check
www.specialoperations.com
What are special forces anyway? Are all troops that have a mission capability and training for anything other than basic "frontline" combat and directly supporting it Special Forces? If so, then even I belong to SOF, having served in an Airbase security and anti-SOF unit. On this grounds FDF rates its military police special forces. they after all have a speciial role mainly fighting enemy SOF. Finland has Guerilla, LRRP, Airborne Ranger, Coastal Jaeger and MP units for SOF use.
If however you only rate the SEALs, SAS or the SPETZNAZ and their like as SOF then the list will be very short. And in the end the role of SOF units is important but limited. The training level of the line units is IMHO what really counts.