Apparently I only get data connected to the Google Youtube account, not data from the legacy Youtube account (that is connected to my Google account). Thanks to this post, https://webapps.stackexchange.com/questions/54031/how-to-use-google-takeout-for-youtube-data-in-an-old-youtube-account, I find out that the legacy accounts are called brand accounts and there is a more convoluted way of getting data from that.
I am now waiting for the data to appear. Seems to take much longer than the previous exports.
