Clyde – 4ft4 (1m32)
Liam – 4ft3 (1m30)
Zach – 4ft0 (1m20)
Rusty – 4ft8 (1m42)
Stella – 4ft11 (1m50)
Albert – 5ft10 and a half inch (1m79) ; 5ft11 (1m81) when he was young.
Myrtle – 5ft5 and a half inch (1m66)
Leonard – 6ft2 [1.5 inches actually] (1m86), basically the same as Lynn Sr.
Girl Jordan – 4ft6 (1m37)
Howard – 6ft0 (1m83)
Harold – 5ft1 (1m54)
A. Johnson – 5ft11 (1m80)
Hawk and Hank – 5ft2 (1m58)
Mr. Grouse – 5ft6 (1m68-69) ; 5ft7 (1m70) when he was young.
Kotaro – 6ft1 (1m85)
Ronnie Anne – 4ft5 (1m35) [she's just taller than Lincoln a few millimeters because her hair].
Bobby – 5ft6 (1m68)
Maria and Frida – 5ft7 (1m70)
Arturo – 5ft8 (1m73)
Rosa and Hector – 5ft0 (1m52)
Carlos – 5ft10 (1m78)
Carlotta – 5ft5 (1m65) [same as Lori].
CJ – 4ft6 (1m38)
Carl – 3ft11 (1m20)
Carlitos – 3ft4 (1m0)
A/N: These minor characters height was came up by me. Even though they are not important and act the main role much to Doraemon AU. You may take this headcanon of mine.