Legendary drum machines fall mostly in two categories : analog ones such as the Roland TR808 (and also electronic drums such as the Simmons SDS5), and early digital ones such as the LinnDrum and the Oberheim DMX, which use low bit samples (8 or 12 bits at most) and have an highly coloured sound (so that people still like to make new ROM kits for these, then sample the output).

Later models (starting in the 90s) have "CD quality sample" and probably aren't particularly worth sampling.

However some late machines such as the MPC series have audibly special sequencers, and "swing" in their own, peculiar way. So sampling individual sounds isn't particularly interesting, but sampling drum loops can be interesting.