+1 for Matriarch. It can have a very distinctive sound, but is also very flexible. A Bandcamp artist named KNIV did some nice solo albums with the Matri.
Edit: Oops, I see I’ve blown the budget. It would be interesting to try making an album with the Grandmother; not sure if it’s as edgy as what the OP needs.
An Odyssey clone could work. The Korg version is a little hard-sounding, might fit.