Nelf vs Highborne[]
Tarsis Kir-Moldir is tagged Highborne (as of this writing). Additionally, the Highborne article itself says that highborne look nearly the same as nightelves:
The access of arcane magic to the ruling caste began to split the Kaldorei nation across racial lines;LoC 17 and despite their outwardly similar physical appearance, those "Highborne" were transformed by the magic flowing through their veins.S&L 76