I checked the list, and I am highly skeptical about it.
The example that I tried to verify: "Spartak" among the 90 most popular given names for boys at the moment in Russia? When everybody immediately associates this with the famous sport club "Spartak Moscow" and the film about Spartacus, the slave? Who wants to be named after a sports club or a slave that lived 2000 years ago? Well, everything is possible, but this just does not strike me as probable.
One more hint: A Google search for "Господин Роберт" (Mr. Robert) gives a lot of hits, but "Господин Спартак" (Mr. Spartak) only very few.