Yes! Since I was diagnosed eight years ago I have been singing from the rooftops now that no-sugar added marmelades are readily available. If they are in my country, with population only 5 million, they will be in more populated bodies of land!
I have tried out two new brands (mine are Australian) and neither raise my blood glucose levels, after extensive 'eat and meter' testing. And yes - seventh heaven indeed. (I bake my own keto bread to have the marmelade on, or when a bit more flush or out of town - store bought keto bread for toasting, although that tends to be tasteless stuff.) (Because I am LCHF - I have lashings of butter.)