OK, sod it, here are Bjork producers / collaborators who do "electronic" stuff that I can think of and leads you could follow up if you like:
Nellee Hooper: Founder of club outfit soundsystem Soul II Soul, founder of Wild Bunch (basically Massive Attack & Soul II Soul when they were one group), produced most all of Debut. Recommendation: Massive Attack's 'Protection', also produced by him, has a few really good moments.
Graham Massey: Founder of acid house outfit 808 State. He's just put out something under a new name, but I can't for the life of me remember what it is... Recommendation: find the 808 State tune Pacific 202 and listen to that on repeat, or try 'Ex:el' which has Bjork singing on a track or two. First I heard of her, actually. Did Army of Me and other bits on 'Post'.
Howie B: Bit shit, IMO, luke warm trip-hop shit. I reckon his production on I Miss You is amazing tho. Recommendation: find Skylab's first album '#1', which is him with Tosh & Kudo (founding members of UNKLE) and others ... beautiful, to my ears what trip-hop was supposed to be... drugged out, psychedelic, ambient instrumentals. Not some downtempo songs.
Tricky: MC/dilettante/tosser. Probably most people know about him. Recommendation: Maxinquaye, one of the best albums of the 90s by a long mile. Like Portishead, this was deceptively difficult listening... Features a young Alison Goldfrapp singing over a Smashign Pumpkins sample too. His Nearly God project featured Bjork on vox too, and my favourite track of his, the haunting Poems (with Terry Hall from The Specials... "I rue the day that I ever met you ... and deeply regret you getting close to me ... Jesus, believe me").
Guy Sigsworth: Pretty clean cut studio producer, most famous for doing the instrumentation for Frou Frou who did that song at the end of Garden State. Recommendation: Forget his own stuff, try his remix of All Is Full Of Love. That's incredible... little Oval CD-skip sounds and fucking weird Jon Hassell-like horns grafted into a really warm and snuggly production.
Plaid: Super melodic, noodly electronica duo, forever remembered in UK techno history as two thirds of the mighty Black Dog. They don't appear on any of Bjork's albums, but she sang on one of theirs, 'Not For Threes'. Recommendation: That album.
Mark Bell: Did all of 'Homogenic', from memory. No wonder it's her most coherent sounding... Released stuff under many names, best bits IMO are as LFO. Speedjack stuff was too slamming. First album is a classic, the defining slice of the Sheffield "bleep" sound of the early 90s. Recommendation: LFO - 'Frequencies' or the single of 'Tied Up'.
Matmos: Collabed on some tracks on Vespertine. Duo who do a lot of stuff sampling found sounds (notoriously their album based on surgery sounds, 'A Chance To Cut Is A Chance To Cure', which has basslines made from liposuction pumps and shit). Recommendation: Last year's 'The Rose Has Teeth In The Mouth Of A Beast' had Bjork (doing spoken word) or if you like Slint etc. 'The West' has Dave Pajo all over it.
Matthew Herbert: Collabed on some tracks on Vespertine. He makes a lot of different stuff, but most famous for house music as Herbert. He's also hot for every-day object sampling action. Recommendation: Hmm... could be a pain in the backside and suggest his first 12" as Dr Rockit, but I'd actually say his production on Roisin Murphy's 'Ruby Blue' is the thing I like most from him.
Thomas Knak: Does stuff as Opiate and as a member of Future 3 / System. 3 or 4 tracks on Vespertine are Opiate tracks that Bjork recycled and put vocals on. Not a big fan, so not sure which tracks. Recommendation: System self-titled album. Super-sparse, spangly experiments in electronic dub... tiniest clicking beats, deepest sub bass, everything echoing everywhere every time.
Console: Sorry, forget his real name, but Bjork did the recycling job on one of his tracks too, think off 'Rocket In the Pocket'. Bought an earlier EP of his, never followed up on later stuff cos I just wasn't very interested. That said, he's a member of excellent indie band The Notwist and their output improved a lot after he joined. Recommendation: The Notwist's 'Neon Golden'.
I didn't pick up Medulla or the one connected with Dancer in the Dark or anything subsequent, so dunno.
Hope that's fun.
