On a regular basis I use five different Linux different distributions. Over the decades, I’ve used pretty every much every major Linux distribution out there… and I haven’t even touched more than 10% of all available Linux distributions.
If I, who’ve made something of a career of tracking Linux, can’t keep up with all the distros how can you?
Honestly, you can’t. No one can.
(ITworld, Steven J. Vaughan-Nichols)