"The greatest of the powers that created this world are called the Valar. The lesser ones are called the Maiar. Thauron, who you met, was one of those. The Queen of Doriath is another; she met and married Doriath's King while the Elves were traveling west to go to Valinor. They have a daughter, Lúthien, who by all accounts is stunningly pretty, charming, and of course half a Maia and magically powerful in her own right, if very sheltered - the King has never let her leave. Doriath accepts Thindar refugees. They don't accept Noldorin refugees because we were on opposite sides of a great tragedy long ago, one Elu has not forgiven or, to be fair, been asked forgiveness for. They don't accept Men of any flavor because you're too unpredictable, but there's a tribe of Men - the Halethrim - that live on Elu's northwest border and seem to be on civil terms with him.
Doriath has a significant population of Dwarves, who Thingol does not like but tolerates because they outfit his army with weapons. Knowing him only secondhand, I would size him up as proud, possessive, xenophobic, but very committed to doing right by the people he regards as his own, and ruled by his temper more in the short term than in the long. Melian tempers him, but for political reasons never actually overrules him. Lúthien as far as I can discern has no political power."