Top starter champs for each role?

if you're suggesting champs to try out in each role to someone new what do you suggest and why?

For me I would think the following:

Adc:sivir some utility for team and good wave clear, not sure what else since I don't ADC much Top:garen, good bully tank to learn, xin, good snowball potential and damage champ, not sure what but I feel like an AP champ should get thrown in Mid:Annie for a burst Mage, personally I like heimer since he can bully and push easy but he is expensive Jungle:ww easy sustain and point and click ult, amumu aoe team fight, nunu objective control and counter jungle are good to learn Support: Ali for tank, Janna for safe utility/peel