Any pasteurised yogurt brand for recommendation ? I'm having GD, and looking for those low in sugar.

I really feel you on this, managing GD while trying to eat well is genuinely not easy. When I had gestational diabetes, I stuck to Meiji plain yogurt and Farmers Union Greek yogurt, both are pasteurised and have no added sugar so they worked well for me. You can usually find them at Cold Storage or FairPrice, and just double check the label for the sugar content per serving to be sure it fits your meal plan lah.