YouTube API to get a list of all channels I am a manager of

This question (from 2013) can be a similar one:YouTube API - List all channels that I manage

Is there any YouTube API trick to get a list of regular channels I "manage"?

The "regular" channels I mean they are NOT from content owners I manage. They are personal channels - if you have a channel on YouTube with a different google account from yours, and then you can even invite yourself to become a manager of that channel. And it shows "You're a manager" as like following image.

YouTube Data API has channels list endpoint.

GET https://www.googleapis.com/youtube/v3/channels

Here, you can filter the result with managedByMe=true. When I try, it returns 403 because I used it without onBehalfOfContentOwner (This 403 is incorrect, really, but that's another story). And I also tried mine=true, it returned only the channel belong to the account who's making the request. I tried it with different tokens, with API key and without API key. I tried different token scopes as well, I just couldn't find how.