Distros that don’t respect your privacy are hard to find, so privacy isn’t really a factor here. You’re just going to get everyone’s favourite distro here, regardless of whether it fits your other requirements.

What kind of hardware do you use?
How stable or fresh would you like your distro to be?
What wind of desktop experience do you prefer?

Also note that the apps you use (on your PC or in the browser) usually far outshadow the OS w.r.t. privacy intrusion.