Low saturated fat intake and high fibre intake are only the foundation. What else is there?

I have been following a low sat fat and high fibre intake diet for about a year and the results are great (LDL around 48-70).

However, I wonder what else is there in terms of dietary influence. For instance it is well known that unfiltered coffee intake increases LDL even though coffee has no sat fats. By contrast some compounds (pistachios, avocado, salmon, chia seeds) are said to have a beneficial effect in lowering LDL even though they may contribute to the daily sat fat "allowance". Have you found certain foods add that extra benefit when it comes to lowering LDL (= beyond just eating high fibre, low sat fats)?