Also looking for the number of people in the US with hypertension that also have both diabetes and high cholesterol.

These are the best stats that I could find after a search on the web:
Approximately 50 per cent of people with diabetes have high blood pressure and approximately eighteen million Americans have diabetes. So, that said, approximately 9 million have diabetes and hypertension.

Since diabetes, presently, has about 18,000,000 Americans in its clutches, that’s 6.3% of the US population or about one in every 16 people are diabetic. Hypertension affects about 50 million Americans–one in four adults.
In adults, total cholesterol levels of 240 mg/dL or higher are considered high risk. Levels from 200 to 239 mg/dL are considered borderline-high risk. 107 million, or 1 in 5 adults, has cholesterol levels above 200 mg/dL