Could you possibly share the URL for the videos you're referring to. In instances like this I tend to find that presenters either make their PowerPoint slides available for download or a PDF equivalent thereof. It's not always the case, and sometimes "how to find 'em" is not always obvious. This is particularly true if this information is presented as "silent intro or outro text" on a video presentation.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
Explanations exist; they have existed for all time; there is always a well-known solution to every human problem — neat, plausible, and wrong.
~ H.L. Mencken, AKA The Sage of Baltimore