Triglycerides and LDL-particle number are the two to really watch. Obviously higher HDL is a benefit. Cleaning up the diet really makes a difference. We eat a lot of food that we didn’t evolve to eat. I’m a big believer that ancestry/DNA plays a major role as well. Different nationalities evolved for thousands of years eating food native to their location. The Kitavan people traditionally eat 70% of their cals from tubers/sweet potatoes whereas the Inuit eat very few carbs and lots of fatty ocean meat including blubber/seals. They are both known to have good heart health, but they get there in different ways.
I respond well to being in ketosis, but when I start adding in things like coconut or very dark chocolate I feel like it raises my BP. I have western European heritage so I’m pretty far removed from those foods being in my diet. Bananas are a weird one for me too. 10-15 mins after eating one is guaranteed heart burn for me. So everyone’s mileage varies when it comes to diet. You need to experiment to find what causes you inflammation and what doesn’t.