I realized that jangamo-o only calls hakamo-o or kommo-o. Is there any other Pokémon that never calls itself?
Original encounter- Ally called
Metapod- Caterpie or Butterfree Route 1 S/M only.
Bisharp - Pawniard
Trumbeak- Pikipeck only On Route 8 in S/M
Charjabug- Grubbin or Vikavolt
Passimian and Oranguru- Trumbeak
Jangmo-o- Hakamo-o or Kommo-o
Sorry if I missed a couple. If I did, please tell me and I will change my answer.
Hope this helped!