Here is a list of the Twitter accounts most followed by the members of the ieeevis community (computed by identyfying the 226 accounts tweeting using #ieeevis with at least 2 tweets, between 2017-09-25 and 2017-10-07).
You can drag an zoom this followers chart
By number of followers in ieeevis
If you want me to compute this for your conference, send me a DM @duto_guerra
Here is the data in case you want to analyze it yourselfThe ieeevis followers network