Assuming you are talking about Izotope Nectar or various plugins in a similar nature, there isn’t really a chain like that. You could conceivable make a chain without the fancy gui using a tool like Carla to patch things together and save as a plugin that is hosted in the DAW, but there is nothing as ‘unified’ as Ozone or similar. All the basic components that make up those processors exist on Linux though, most of them consist of the following:
With some combination/variation on the following:
Stereo Widening (A couple ways to do this)
All of the above exist on Linux as separate tools, just not a unified tool.