Lard!
Grass Fed beef had a different Omega-3 to Omega-6 profile.
Go into the grocery store, and if the fat on the beef steak is hard and white as paper, that is grain fed and the fats are not good for you. If the fat is semi-cloudy white and softer to the touch, it’s grass fed, and the O3 to O6 ratio reflects it.
The studies about beef being bad - are done with the “hard fat” variety. Grass fed beef is as healthy or healthier than the fat in avacados.