How to use /summon {MOB} riding {MOB} by droth_the_dragon

/summon MOB ~ ~1 ~ {Riding:{id:"MOB"}}    =2 mobs

/summon MOB ~ ~1 ~ {Riding:{id:"MOB",Riding:{id:"MOB"}}}    =3 mobs

/summon MOB ~ ~1 ~ {Riding:{id:"MOB",Riding:{id:"MOB",Riding:{id:"MOB"}}}}    =4 mobs

/summon MOB ~ ~1 ~ {Riding:{id:"MOB",Riding:{id:"MOB",Riding:{id:"MOB",Riding:{id:"MOB"}}}}}    =5 MOBS

My creations

/summon Ghast ~ ~1 ~ {Riding:{id:"Giant"}}    =giant with a ghast head that shoots fireballs

/summon Chicken ~ ~1 ~ {Riding:{ActiveEffects:[{Id:1,Amplifier:1,Duration:999999,ShowParticles:0b}],id:"Bat"}}    =flying chicken

/summon EntityHorse ~ ~1 ~ {Riding:{id:"Cow",Riding:{id:"Pig",Riding:{id:"Ozelot",Riding:{id:"Chicken",Riding:{id:"Bat"}}}}}}    =Flying Animal Party

/summon Minecart ~ ~1 ~ {Riding:{id:"EnderDragon"}}    =rideable ender dragon (you have to click the minecart)

/summon Minecart ~ ~1 ~ {Riding:{id:"Ghast"}}    =Rideable Ghast

/summon Creeper ~ ~1 ~ {ActiveEffects:[{Id:1,Amplifier:1,Duration:999999,ShowParticles:0b}],Riding:{id:"Bat"}}    =Exploding Suprise (invisible creeper riding bat)