I usually log my submissions in submission grinder which is a free website
https://thegrinder.diabolicalplots.com/so my wait times were easy to find. (Incidentally, even if you don't create an account on submission grinder, it's another resource for looking at response times. They have a lot of data, for example, on submissions to Cricket magazine:
https://thegrinder.diabolicalplots.com/Market.aspx?mid=67 )
Anyway, here is my own personal experience with submissions to children's magazines:
Highlights magazine (poem) rejection response times: 179 days minimum - 228 days maximum
Highlights High Five (poem) rejection response times: 18 days minimum - 120 days maximum
Highlights High Five (poem) acceptance response times: 20 days minimum - 224 days maximum
Ladybug magazine (poem) acceptance response time: 283 days
Ladybug magazine (poem) rejection response times: 34 days minimum - 58 days maximum
number of days after acceptance to publication: 1 year minimum - years and years maximum (I'm still waiting)
Is this the kind of data that you were looking for, or did you want to know the number of acceptances vs. the number of submissions?