A41ZZ, A45XR, CN2MA, ES6DO
EW8W, HA1RB, HA7TM, IK4LZH
OO7B, SQ9IWA, SV1EDY
In addition it wouldn't surprise me if MM0HVU also runs automatically from time to time judging from how often that call sign is seen on the bands.
Have you worked any of these stations? And are there others who are active on an almost 24/7 basis?
By the way, the presentation has title "WSJT-X FT8 and Beyond" and can be downloaded (images and sound) here. It is well worth listening too.
This blog post first appeared on the LA3ZA Radio & Electronics Blog.