if you have a nested parallel job the visual layout is not really correct

it looks much better in blue ocean the layout

example
parallel Android: {
parallel PartOne: {
stage("Android One")

{ build propagate: true, job: "Android One" }

 
},
PartTwo: {
stage("Android Second")

{ build propagate: true, job: "Android Two" }

},
failFast: false
 
stage("Android Finally")

{ build propagate: true, job: "Android Finally" }

},
iOS: {
 
stage("iOS One")

{ build propagate: true, job: "iOS One" }

 
stage("iOS Two")

{ build propagate: true, job: "iOS Two" }

 
stage("iOS Three")

{ build propagate: true, job: "iOS Three" }

},
failFast: false