• Bevies of believers
• Certain sects
• Commune groups
• Devoted groups
• Extreme sects
• Extremist sects
• Fanatic followings
• Fanatical fan clubs
• Followings
• Fringe factions
• Groups of devotees
• Groups with fringe benefits?
• Ideological groups
• Pagan religious sects
• Religious extremist sects
• Religious fringe groups
• Religious groups
• Religious offshoots
• Religious sects
• Schismatic groups
• Serious fan groups
• Some extremist groups
• Some religious groups
• Some sects
• Splinter groups
• Worshipful groups
• Zealously devoted groups