Leaving the drum boxes out for the moment and concentrating on the tone generation of the organ's voices.</p>
Use of samples or S+S (Sample and Synthesis) would be digital. True digital additive synthesis (like Kawai used) and FM synthesis are also digital (though I suppose you could do this using analogue oscillators. Physical Modelling will be digital - when Roland et al apply it to organs.</p>
Creation of waveforms in other ways, whether through subtractive filtering or waveform addition, would be analogue.</p>
Of course there may be some digital circuitry in analogue organs, but not actually a crucial part of the tone generation process - all sorts of control circuitry etc. Also maybe for top octave synthesis.
Maybe a little simplified, but that's basically how I'd read it. Pretty much what you said, Skip.</p>