>>1742238lelele sounds a bit like what a stuttering guy might call elves (älvor, ellefolk) and their descriptions are similar, I guess they could be related. also neither good nor evil, though we have nothing like that calusari.
another similar nordic superstition is 'dis', which is the name given to mist (and still is in modern day swedish), in nordic mythology it meant goddess, mist were related to female spirits or ghosts