Skyr 4g per 100 g, is my favourite. The carb values of a few - taste does matter though. Yeo Valley is 6.5g per 100g, Total 0% 4g per 100g - one of the few very low fat ones with no rubbish - which is also lowish carb, Oken Dollop 3.4g per 100g. Own brand Greek Style 4.9g per 100g. If you can get past the colour try Alpro - 2.1g per 100g. All this info is on the labels. Watch out for those marked high protein they usually have jam in them.