Of course there's variation, but most analog-style synthesizers still use the same basic oscillator waveforms (sawtooth, sine, triangle, square), some ADSR envelope variant and some LFO's.
That doesn't make them feel or look the same.
> most analog-style synthesizers still use the same basic oscillator waveforms (sawtooth, sine, triangle, square), some ADSR envelope variant and some LFO's.
We are basically talking about the user interface, not the underlying synthesis engine/implementation. There is quite a bit of variety among synth interfaces that otherwise follow the standard subtractive synth mechanism of producing sound.
This is a bit condescending. There’s much more nuance, variation, experimentation in synthesizer interfaces then what your comment suggests.