[primavera♥]

Whatever (FPM's Winter Bossa) - Ayu-mi-x II
Key (nicely nice waterfowl remix) - Unite! single

Are the most relevant examples I can think of that are good I'm my opinion
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I think these songs are still a bit dancey but I find them to be pretty unique like the above mentioned remixes and not the average dance arrangement. They bring life to these songs and give them a new sound. They're also a few of my favorites.

glitter x SOUL CENTRAL - ayu-mi-x VI
End Roll (Kindmonkey East London Remix) - ayu-mi-x II
Endless Sorrow (nicely nice skyblue remix) - Endless Sorrow single
SURREAL (nicely nice electron '00 remix) - evolution single
Virgin Road (FPM EVERLUST remix) - ayu-mi-x VII
Far Away (Laugh and Peace remix) - M single
Boys & Girls (Inskadisco mix) - ayu-mi-x II

A few of these may be stretching it but hopefully you can find some remixes you like. There are remixes that ayu have that are better than the originals IMO lol. Some of theme even make commend them amazing musical ideas in them (talking about ones not listed here too)

I literally have only been listening to ayu's remixes lately.