From you list I like
Sergei (
Sergey),
Dmitri (
Dmitriy),
Lev,
Radomir for boys and
Oksana and
Anastasiya for girls. All of those, but
Anastasiya are on my PNL. I also like
Ekaterina (prn same as
Yekaterina, but I prefer this spelling)
LaraLarisaMilaMilenaTsetsiliyaYevaZoya
ArkadiyMatveyMiroslavNazariyNikitaPavelValentinValeriyVladimirVsevolodVyacheslavYefremRuslan
I've been into Russian names ever since I started taking Russian, there are absolutely gorgeous.