Entries are only listed if they have clear preferences for certain knots, and those preferences are different from similarly-related fields. For instance, while rock climbers and arborists would seem to be doing a similar activity, they still prefer slightly different knots.

• knitters, crocheters, people who sew, lacemakers — perhaps the oldest users of knots
  • macramé — done completely with knots, no weaving whatsoever
• sailors — perhaps the 2^nd oldest users of knots
• surgeons — sutures
• climbing
  • mountain climbers
  • arborists
• wilderness-dwellers — pioneering
• electricians — cable lacing
• kinksters — bondage

Ashley Book of Knots (c.1944) lists these occupations in Chapter 2 of the book, along with knots used by each

• archer
• artilleryman
• artist
• angler
• automobilist
• baker
• basketmaker
• bell ringer
• baloonist and parachutist
• bicyclist
• blaster
• bookbinder
• boatmaker
• burgler (specifically, the knots that they might find themselves facing, including the noose)
• butcher
• cabinetmaker
• camper and canoeist
• chandler
• carpenter
• cartman
• circus man
• cook
• climber
• cooper
• cowboy
• drayman
• dressmaker
  ...okay, I'm done typing