With OVTG training, you once again use the video conferencing application, but instead of training one person live, you're training several people live. Classes run on your schedule, and there are no late cancellations.
This might be my favorite type of online training because it allows me to be present and you know, actually train.
What makes this more enjoyable than OVTP training is that I don't have to worry about late cancellations of debating whether or not to take away sessions.
The schedule is set and if you show up, great. If not, I still get paid. Like all online training services this takes a while to build up but you have the benefit of a group, a club, something to belong to, so that you're not stuck in awkward conversations.
In terms of earning potential this probably offers you the highest upside and there's no limit to how many people you can train at a time. A zoom pro account allows for up to 100 people at one time.
Check out some success stories of a few trainers I've mentored.