Hmmmm.... I think that Clumsy shipping is a pretty interesting and underrated one. It features Maylene and Barry, whom I think they can relate to each other, in the way that a lot of people look down on them as weak. In the anime Paul ruined Maylene's confidence and he kinda did the same with Barry in the anime. They could relate the same kind of pain of having people always one step ahead of them.
That and the fact that they're sort of clumsy in a way. Maylene's kinda shy at times and get's a little bit flustered while Barry is just such a comedic reckless fool. I think they would make a great couple.
Then there's the obvious Belle/Barry shipping. I don't know what it's called, but I would love to see an anime episode where Barry joins the gang and they find out in a shocking twist that Barry and Belle are cousins! Either that or one of the main characters mentions how similar they are.
There's another weird shipping that I heard of featuring Iris/Barry. What's it called again?
Yes, Furosuto means Frost in Japanese.