JoJo's Bizarre Adventure - JoJo stands observe Jonathan

Nope, ZA WARUDO is specifically Dio's stand. Jonathan canonically has a "primitive stand", similar to, and possibly Hermit Purple, which DIO uses in the beginning of Part 3. According to one of the novels (Maybe Jorge Joestar, I think), his Stand is "The Passion", which is like Hermit Purple but gives vision about his own bloodline (or something like that, not sure right now).

Beautiful sunshine man is unaware of their presence.