Mataro is Mourvedre, so this is a GSM blend with a different name;
but this is a different kind of wine and wine company - let me explain:
Claymore Wines 2018 You'll Never Walk Alone
This is a GSM blend (but call it Mataro, not Mourvedre), is full of black pepper, blackberry, dark and brooding fruit that keeps giving the more it stays open. Rich and close to unctuous, yet well-balanced with acid and tannins bringing it all together. It still has a few years ahead of it, but drinks well right now. It is 14.7% alcohol, so just beware.