Gorck
Prince of Dorkness
Most of these a would pronounce the way you do.I've never heard anyone pronounce it "fan-DAY-lin", though, have you?
EDIT: On topic of pronunciations, it seems they've changed their minds on Acererak. In Tomb of Annihilation, it's "ah-SAIR-ack" but in the Lore Glossary they've got it as "ah-SAIR-er-rack".
Also, "ah-LOOSE-tree-ell" just sounds silly to me. She'll always be "ah-LUSS-tree-ell". And her sister is "LAY-rull" not "LAIR-ull".
I don't like either option for Euryale either. A modern Greek speaker would pronounce it like "ehv-ree-AH-lee". I tend to go with "yur-EE-ah-lee" myself.
I prefer "HAY-dar" for Hadar myself.
I've also pronounced Kas as "KASS" not "KOSS".
I've also always pronounced Tharizdun as "THA-rizz-dun".
I would also be inclined to pronounce Yolande as "yo-LAND-uh".
As you mentioned to @Parmandur, I would say "FAN-duh-lin"
My instinct for Euryale would be "yur-ee-ALE"
I think for Kas, I would pronounce it "KAHSS", but that might just be my Boston Accent bleeding through (Car is pronounced "CAH"), despite there not being an "R" to drop. Likewise, I would say "yo-LAHN-duh"
Lastly, I've always liked to say "thar-izz-DOON". Emphasizing that last syllable lends it a darker, more sinister vibe. Sort of like Thulsa Doom from Conan the Barbarian.