Not such a good choice...
Please don't hate on me, I'm just going to voice out my opinion. Alright, let me just get straight to the point here: I do not like Jojo Siwa whatsoever. It promotes stereotypes that girls should wear bows and dress in bright colours, and dance, etc. Jojo Siwa herself is rather bratty and throws tantrums from time to time, and I do not think this is suitable for young children to watch.
She also does act way younger than her age, wearing a large bow on her head at age 15 is acceptable, while whining and being a brat is not. I find it odd and sort of disgusting that people would watch and promote content such as this, since it is an overload of consumerism, and she is rude, especially in Dance Moms, particularly to the other girls, her own mom, other mothers on the show, Abby (I don't blame Jojo for being rude to her, though), and more.
Jojo has also bragged to the other dancers and underestimated some of their skills and talent.
All in all, these shows promote anti-feminism and depict girls as those who should wear pink, wear bows, and more. I don't think they are good role models, even if it all actually is scripted.