Stronger credit history?

I’m in my early 20s with a 790 fico score. I haven’t had a car loan or mortgage on my credit history. I’ve been building my credit with 2 credit cards, one has a limit of 13k and the other has a 2,500 limit. I pay them off each month and don’t carry a balance , my question is how can I make my credit history look better so that when I’m ready to purchase a home or car I can get better interest rates, thank you.