Ruby Rose for sure. She's the main character in Remnant and Naruto would likely be drawn to her energy and determination. He could also interact with Weiss Schnee. Naruto might be interested in her family's power and wealth, and Weiss could be curious about Naruto's strange abilities. Another one could be Blake Belladonna. Given her past and her more reserved nature, Naruto might try to befriend her and help her open up more.
Yang Xiao Long would be an interesting character for Naruto to interact with. Her brash and confident personality would contrast with Naruto's more optimistic and sometimes naive nature. They could have some fun battles together to test each other's strength. Then there's Professor Ozpin. Naruto would likely seek out Ozpin for answers about this new world. Ozpin, in turn, would be curious about Naruto's origin and his abilities. Also, Emerald Sustrai could be a character Naruto crosses paths with. She has her own motives and Naruto might get involved in her schemes, either by accident or by trying to stop her.