I have to comment that you are quite active in social networks from my point of view. I also want to congratulate you for reaching a new goal in your Power Up.
I am what they classify as a digital immigrant, so if I give advice about this virtual world it is something that should always be submitted at your own discretion, made the "disclaimer" I wanted to comment that in a network conference I heard A few days ago, one of the professors commented that the selection of the networks to be promoted would depend largely on a previous study on which is the target to which it is aimed.
That is, according to the Twitter conference it was more used by people "mature adult" and to a lesser extent by adolescent and "Young Adult" (I think it refers to the group of 18 to 29 years in this group); It is precisely these last two groups that use instagram most (with preference for video content).
So the selection of the networks, in order not to waste efforts or resources, begins with a study of the target population of the content that is being created and then an evaluation of what is the most used by such people.
I hope these ideas are of some use to you.
Thanks for the suggestions and the info. The target audience for Steem is very interesting because it is potentially very wide. Also some groups are going to be more easily swayed to join the community than others. You mention the 18 to 29 years group. I think this will be an easier target to attract and they might be more willing to give something new a try. I still need to study the data more carefully but I think this a reasonable starting assumption.
There are reports with this information that can help you, maybe one like the one in https://datareportal.com/reports/digital-2019-global-digital-overview gives a general idea.
Also, the globalwebindex site has published for years a report of the use of social networks and one of the variables they consider are age groups, I think the most recent report can be requested from https://www.globalwebindex.com / reports / social