Most people and companies I know use either Gerber or Lectra, which is an actual pattern making software. They aren't your typical CAD softwear, and basically all the tools are geared towards sewing, so you have things like shrinkage etc. that can be programmed in. Only downside is that the licenses are expensive.
A lot of the younger brands seem to use less optimal software, so you'll see people use Rhino, Fusion 360, Solidworks and other CAD software, or Illustrator which is just a Vector program. It can work fine, as long as the designs and materials aren't too complex. Hell, I even used pepakura to unfold a 3d model to get a base pattern. It's not how it's supposed to be, and it's not how I'd like do to it, but it can absolutely work.
At this point, I think using the software that you're comfortable with makes the most sense. If you aren't doing huge production runs, why do you need to pay for Gerber or Lectra? If these patterns are mainly for laser cutting in your workshop, you're probably getting there are lot faster with Illustrator and maybe a 3d modelling software for the more complex shapes.
