I know most readers have trouble pronouncing the Ghiscari names but I love them. I will share my thoughts with you with regards to these names. Please share your ideas if you like.
If I had to rank my favorite people based on names alone:
Ghiscari - really cool names
Dothraki - they sound harsh but that is in keeping with their culture
Valyrian - I like some names like Rhaenyra and Daenerys. I don't like Aenys, Aegor, Aegon, Jaeherys, Aerys, Daena, etc. There's not