The best replacement for bts is les mills.

The best alternatives to bts are rated as following:
★★★★★  les mills
★★★  got7
★★★  bap
★★★  exo
★★★  joindota
★★  mrt
★★  john woods
★★  dut
★  gd studio
★  bda
★  bto
  sts
  stb
  bfs
  dut)
  john wood

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

Other search terms related to bts and their ratings are:
★★★★★ taeyeon
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bts
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