Is there anywhere on the Internet a scheme of the Greek names and of the elements of which they are formed?

Lexicon of Greek Personal Names, University of Oxford , the online dictionary of all attested Ancient Greek names (which are overwhelmingly from inscriptions) has some materials on their publications list and announcements list, but nothing as methodical as what you have in the Wikipedia page you gave.

The most awesome Dr. W. PAPE’s Wörterbuch der griechischen Eigennamen is a dictionary of all  attested Ancient Greek names as of 1911, which means it is more on the literary side, and its has an introductory chapter on how names are formed, pp xvii-xxxii, including the elements names are formed from. Unfortunately, you have to be able to read German, and Fraktur at that. If you can read Greek though, you’ll understand what’s going on.

The Wikipedia page Ancient Greek personal name  does have an overview, though not a schema.