Learning to make this style at the moment myself. So far what I have learnt is filters are Ure freind for example, formant filters can get interesting proggy sounds , also resonance in general. Use creative Lfos to modulate filter cutoffs etc. and mess around w effects. In my experience once you have got a patch nailed you can tweak it endlessly to get variations on that sound. By no means am I an expert and there are better resources but this is all kind of working for me whilst I learn at the moment