The best replacement for cults is sects.

The best alternatives to cults are rated as following:
★★★★★  sects
★★★★  gangs
★★  denominations
★  religions
  organized religion
  religious groups
  occults

Your alternative for cults is not listed? Suggest!
Speaking about cults, one probably shouldn't forget about biblical christianity.

Other search terms related to cults and their ratings are:
★★★★★ biblical christianity
You have in mind a companion for cults and it is not yet here? Propose!



Google Trends

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cults
sects
gangs