1. Jupiter 8 - brass, strings, pwm pads n sweeps, plinky arpeggiations, bass sequences..
2. PPG Wave 2.3 - hybrid - lofi gritty wavetables with warm SSM filters, digital dirt in analog filter heaven.. bass, fx, pad, bell, vox etc etc
3. Prophet 5 - brass, leads, bass, polymod sounds etc.. more leads..
they are all unique and classic in their own right. tons of great music from that period used em, the synth pop/new wave top40 stuff, as well as alternative artists..instrumental and film music etc.. they were everywhere.
with these three i think id be covered. esp if combined with a cheap TX module for classic DX7
sounds, and a waveterm B for using PPG as a sampler.
don't own a PPG, tho i'd love to, but i do have an ssm P5 and a JP8.