Reminded me of something not as bad as that, but: another Japanese company (Shimano) also has confusing (to my American brain) product progression.
Currently, their road groupsets rank like this (low to high):
Claris (8-speed)
Sora (9-speed)
Tiagra (10-speed)
105 (12-speed, available in both mechanical and electronic)
Ultegra (12-speed, electronic)
Dura-Ace (12-speed, electronic)
More niche, but Ltwoo (Chinese bicycle parts maker) uses "R9" for its 11-speed groupset offering and "RX" for its 12-speed.
Currently, their road groupsets rank like this (low to high):
More niche, but Ltwoo (Chinese bicycle parts maker) uses "R9" for its 11-speed groupset offering and "RX" for its 12-speed.