I was being a tad facetious and mocking the Brit newspaper. To them every specialized Combat Arms unit is a "Commando".
But I guess/think the Navy SEALS would be the closest we have to a true 'Commando' unit - in Brit tyerms. I discount DELTA Force as all their 'stuff' is Top Secret. And the Green Berets - though a bunch of kick as Snake Eaters - besides them being a Force Multiplier are into a lot of Hearts and Minds stuff, so they wouldn't be true 'commandos'.
In the 'olden days' if you called a Green Beret a 'Commando' you'd get hit upside the head. (US Army Special Forces, for those that don't know)
OOPS, on second thought the Army Rangers might fit the 'commando' definition.