It's always been the Goron Bruddahs for me. In OOT and Majora's mask they were a friendly race and I liked their cute round appearance. Members such as Darunia were really likeable funny characters. But it was TP where the Gorons really shone. They had a well developed society, they liked hot springs, were into strength and sumo.No longer did they all look the same apart from their chief, there were unique looking Goron Elders at the top of their society, each with their own distinct personality and look. Baby Gorons had volcanic openings on their heads and one of the elders had them on his back.
Unfortunately 2006 was the last good appearance for Gorons. SS did not feature them prominently enough. And then BoTW went backwards with the race, most of them looked the same again, there were a few unique (but not in a good way) designs and their society seemed to have devolved. The goron kids are mostly brats, yunobo is annoying and they have a useless leader.
The opposite happened for the Zora's in BoTW where I feel the race was portrayed in the best way yet, they have the most beautiful location in the series, I loved their new look. I enjoyed Big Daddy Dorephan and think he is the best Zora king ever. Miles above the one in OOT responsible for that most annoying cutscene. Sidon was great too, very likeable. The saggy elder Zora's were funny in the way that they hate link and then of course you have the contrast with the younger ones who were all friendly and liked him. There is good development when you save them and the elders become grateful afterwards and they realise they were wrong to judge. It's great to see this drastic change in attitude which you don't get with any of the other races in the game.
The Deku aren't in enough games. I like their Majora's Mask appearance and their change from judgemental to more understanding. But they just haven't made enough appearances to compare to Gorons and Zora's.