All of them have premium prices, but not a single one of them freemium, or always-online, meaning you get what you pay for and what you pay for is high quality software.
Presonus if you need a pro tracker, or even the chance at mixing Atmos on Linux (though the hardware needs to be supported OS-side of things).
Mixbus 32C is cool, because it’s EQ’s and compressors are analogue modelled after their classic console. They got that real nice vintage sound.
Bitwig is basically a mixer/sequencer DAW, meant for electronic music and live performances.
Now if only Ableton Live could be ported to Linux :( pretty please?