The best replacement for knob is lever.

The best alternatives to knob are rated as following:
★★★★★  lever
★★★  handle
★★★  nob
★★  4 knob
★★  presonus monitor station
★  presonus central station
★  knot
★  central station
★  door lever
★  fine adjustment knob
★  mt holly
★  dummy knob
  monitor station

Your alternative for knob is not listed? Suggest!
Speaking about knob, one probably shouldn't forget about backplate.

Other search terms related to knob and their ratings are:
★★★★★ backplate
★★★ bolt
★★ overdrive
★ screw
You have in mind a companion for knob and it is not yet here? Propose!



Google Trends

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knob
lever
handle