Any cheesecake recipes that don't require sugar?

And I don't mean replacing sugar with some type of artificial sweetener.

Also, is sugar necessary for the structural integrity of a cheesecake or can it be left out completely?

My mom wants a cheesecake for New Years Eve but due to health concerns will not eat sugar. I personally don't like the taste of splenda and the like. Are there recipes that don't require any sugar period? I would like to rely on the other ingredients to keep it tasty but I will be making a fruit topping as a side for people who want it sweeter.

I've tried looking stuff up online but everything seems they still require some type of sugar.

Thank you for your help!

bon appetit