Note: Mild S2 spoilers!
Naomi Alderman, ZR co-creator and lead writer:
Nice question! The answer is that it’s partly deliberate and partly happenstance. Pandora Haze and Van Ark are both names that were requested by Kickstarter backers, but I felt they had a particular literary quality to them, and particularly nice resonances, so those were the ones I picked to do something more than “name a park” with 😉