....me
srsly - people who give a shit about other people, and the planet as a living system.
Doesn't matter what previous job - you want the CEO who talks to the homeless dude at the shops and tries to figure out their story and help them out in a way that makes sense to the homeless dude, the cop who could have ticketed teenagers for smoking bongs in the skatepark but sat with them and tried to understand what circumstances led them to smoking bongs in the skatepark instead. The chippy who sees that you're struggling with a home project and whacks a few nails in for you, the truck driver who picks up hitchhikers and makes sure they get places safely, the lawyer who does pro bono cases to make sure orang-utans have places to live, the coal miner who can see that their industry has a limited future and works toward gearing themselves and their workmates for a different future career, the software engineer who gives their code away for free because it'll make people's lives easier.
In general, people with integrity, empathy and who can see further than an election cycle and their own hip pocket. Think José Mujica:
https://www.theguardian.com/world/2013/dec/13/uruguay-president-jose-mujica
If I could rewrite the system tomorrow, 'politician', and 'lobbyist' would cease to be a career and 'head of state' would be a nonexistent job. We'd have expert-in-field, up-to-date advisors heading public service departments, a method for calling on industry experts which don't involve exchange of cash, and rolling 'citizen jury' to decide on legislation. 'head of state' would be a person from the current citizen jury decided by consensus (or something like that). The basic rules of decision making would be - what gives us clean air, what gives us clean water, and what makes the world liveable for our grandchildren's grandchildren? With vastly less weight assigned to those who won't have to live with the impact of their decisions - which is basically the reverse of now.
Wow. that was more complete - I meant to stop at line 1...