Note :- ash have never travelled with Misty,may , max , dawn , Iris ,cilan ,Clemont, Bonnie, goh and chloe but he have travelled with brock, Tracey and serena .

He travelled with brock in kanto , jhoto , hoenn and sinnoh regions. 

He travelled with Tracey in orange Islands. 

He travelled with serena in kalos region. 

He also go to school in alola region .

Ash doesn't know any of his rival's except Gary, alain and gladion . Gary was his first rival and also his best friend and alain was his kalos rival and they both we're best friends  . Gladion was his alolan main rival and they both we're best friends

If you are wondering who is ash's other league's rival's were then it was ethan ( gold ) in jhoto , brendan in hoenn , lucas in sinnoh , nate , Hilbert in unova and hop and Victor in galar . Then his other rival's except for gladion in the alolan region was elio ( sun ) ,kiawe and hau.

Name :- Ash ketchum

Age :- 18

Name :- serena Yvonne

Age :- 18

Name :- cal--- . Buses started to falling on him .( calem or camel )

Age :- 18

Name :- meitte

Age :- 18

Name :- shauna

Age :- 18

Name :- Trevor

Age :- 18

Name :- Misty

Age :- 18

Name :- Gary oak

Age :- 18

Name :- may

Age :- 18

Name :- drew

Age :- 18

Name :- clemont

Age :- 19

Name :- Korrina

Age :- 19

Name :- dawn

Age :- 18

Name :- berry

Age :- 18

Name :- Paul

Age :- 18

Name :- ursula

Age :- 18

Name :- Iris

Age :- 18

Name :- cilan

Age :- 19

Name :- Bonnie

Age :- 12

Name :- max

Age :- 12

Name :- goh

Age :- 18

Name :- chloe

Age :- 18