The demo version of the JMB sample pack contains several waveforms called morphing wave based on wavetable. The waveforms of the first and last steps of the sample are identical, so they loop without a click sound.
The morphing wave in this sample pack is 120 waveforms long. The first name of the sample is MW.
Some morphing waves are available as 120 scw.
Since it is impossible for AR to smoothly change between waveforms like wavetable, I have included pre-smoothed waveforms as samples.