> Everything is still either magnetic- or inertial confinement-based, right?
Pretty much, but there are some that are kinda-sorta both (General Fusion's approach is "magneto-inertial"), and also a lot of variety within each bucket. Like, Zap Energy's approach is magnetic, but involves no external magnets, whereas developing the fancy magnets is a key operational challenge for CFS.
There's some interesting arguments in favor of the combination of magnetic and interial approaches. This is broadly known as 'magneto-inertial fusion', and there's a continuum of ideas between 'mostly inertial' and 'mostly magnetic'. I'd put Helion's approach far toward the magnetic side.
Pretty much, but there are some that are kinda-sorta both (General Fusion's approach is "magneto-inertial"), and also a lot of variety within each bucket. Like, Zap Energy's approach is magnetic, but involves no external magnets, whereas developing the fancy magnets is a key operational challenge for CFS.