This study compares insulin icodec, taken once a week, with other basal insulins, taken once a day, in people with type 2 diabetes.The purpose of this study is to see how well the approved injectable weekly insulin icodec maintains blood sugar levels when compared to approved and available daily injectable basal insulins in people with type 2 diabetes. The participants will either be prescribed weekly insulin icodec or a daily basal insulin (insulin glargine, insulin detemir or insulin degludec) based on current standards for the treatment of type 2 diabetes. The study will last for about 13 months.