Linear motors are divided into two large groups:

• Low acceleration linear motors: used in transportation.
• High-acceleration linear motors: used in weapons such as the magnetic cannon and space artifacts.

Linear motors can be classified into four different types:

• LIMs
  • hyperloop
  • maglev
• Synchronous Linear Motors
  • maglev
  • hyperloop
• Homopolar Linear Motors
• Piezoelectric Linear Motors
• https://en.demotor.net/electric-motors/types/linear-motor

More general types

• Iron core
• Ironless
• Tubular
• Piezoelectric
• https://sinadrives.com/en/linear-motors-what-are-they-and-which-types-are-there/

https://cdn.ymaws.com/bsahome.org/resource/resmgr/bearing-briefs/linear_motors.pdf