don’t know if it has been already posted, but I found this website: https://www.ninjalitics.com/
Is free and for me right now is the best website for IG insight.
I found this website few weeks ago too. Great thing about them is you can analyze every account with them. With socialblade.com I remember that was not possible when the account was really small. On ninjalitics.com you just have to let them collect data for max 24 hours if the account is small and nobody searched for it yet.