Not to be flippant, but if you’re at the point where this is the biggest potential health change you can make to your diet and lifestyle, then I highly doubt that your choice of saturated fat will create any appreciable difference in your overall health outside of the placebo effect.
The issue is not as cut and dry as you depict it.
https://www.verywellhealth.com/difference-between-saturated-fats-and-unsaturated-fats-697517
https://www.healthline.com/nutrition/are-vegetable-and-seed-oils-bad#heart-disease
Not sure where you are getting your information, and perhaps I am out of the loop, but saturated fats are (as I understand it) something you want to limit or avoid in ones diet. They contribute to higher cholesterol leading to a higher risk of heart disease.
Poly- and monounsaturated fats are fine.
^(Partner works in diabetes area.)
Regardless of source, high saturated fat intake is still associated with cvd risk regardless of lifestyle. Although some reaserch may suggest dairy fat isn’t as detrimental the focus should still be on monk and polyunsaturates, eg nuts, seeds, fish, extra virgin olive oil, etc and complex unrefined carbs like beans, lentils, wholegrains and unprocessed root veg as well as eating lots of fruits, vegetables and lean protein.
Yes - Expert opinions have shifted somewhat on consumption of certain satfats. But asking if tallow is better than cocao butter is better than coconut oil seems like trolling the satfat libs.
Red meat fats and dairy butter are specifically linked to higher risk of disease.
 
‘In contrast, there were differences in CHD [coronary heart disease] risk when food sources of SFAs were considered, with a lower CHD incidence with consumption of SFAs from fermented dairy products (yogurt and cheese) and fish, but a higher CHD incidence with consumption of SFAs from red meat and butter.’
 
All satfats can be synthesized de novo by humans so are technically they’re non-essential. All biologically produced satfats are of animal origin. Whether specific dietary satfats provide benefits beyond replacing less healthful satfats is not agreed on.