Tracktion/Waveform also has a Linux version, and they've made the older Tracktion 7 available free (including Elastique stretch) [1]. I gather Tracktion was developed by Julian Storer (of JUCE & ROLI fame), then purchased by Mackie, now spun off as its own company with Storer again.
Renoise also works on Linux, but probably doesn't count as a major DAW since it's a tracker interface (even though it supports VSTs, VSTi's etc). [2]
[1] https://www.tracktion.com/products/t7-daw
[2] https://www.renoise.com/