Dr. Fauci gave a lecture that you can find on YouTube:
In minute 23 he shows a list of underlying medical conditions associated with increased risk for severe COVID-19 illness. Type 2 Diabetes is among them, and he highlights it in his narrative.
Then he shows a list of conditions that he says are “more weakly” associated with severe outcomes, and Diabetes Type 1 is on that list. Again it is one of the two conditions that he highlights in his narrative.
First I have seen distinguishing between T1 and T2.