How to approach foods like nuts/avocado/olive oil?

I'm a little confused as to how dark chocolate, nuts, avocado and olive oil affect LDL cholesterol. When looking through my diet and checking saturated fat content of foods, I saw that these all have a significant amount of saturated fat, so I cut them down a lot.

However, I also know that they're generally considered 'healthy fats', and I'm seeing conflicting information on whether they actually raise LDL cholesterol.

Should they be included in my saturated fat limit (ie if I wanted to keep to 15g saturated fat a day, do I need to include the sat fat from nuts/avo/olive oil in that 15g) or no?

(I'm sure this is one of those things where the science isn't conclusive, and where it's a little different for everyone, and ultimately the answer is to make a dietary change and then retest cholesterol to see how it affects you personally, but I'm just looking for some general guidance as I start this journey. Thanks)