Our detectives are back with the following intel on this WordPress site
The site is using the Blesk theme by Colorlib .
We could identify 3 plugins (there might be more) - Smash Balloon Social Post Feed , Gabfire Widget Pack and Embed Plus for YouTube – Gallery, Channel, Playlist, Live Stream
YouTube Embed WordPress Plugin. Embed a responsive video, YouTube channel gallery, playlist gallery, or YouTube.com live stream (with GDPR options)