I'm 13, all kids are dumb, who likes kids? Anyway, I don' know the top one but the others are 'Crocodile Hunter' the late great Steve Irwin and 'landscape legend' the late great Bob Ross.
That’s Fred Rogers of Mr Roger’s Neighborhood, a PBS TV show from 1968-2001. Probably the nicest guy ever on tv. Great role model for kids in three generations. : )