Connector for YouTrack of JetBrains, which is online software to support software delivery.
It supports both authentication with a permanent token (recommended by JetBrains) as well as OAuth2.
There are approximately 88 tables as described on Entities - Help | Developer Portal for YouTrack and Hub.
Tips on configuring YouTrack with Power BI are available on Connect Power BI to YouTrack, 180 days free.
For Power Query and Azure Data Factory there are separate pages:
Tips on acquiring the permanent token in the user interface of YouTrack can be found on How to get a YouTrack permanent token for Invantive SQL and Power BI?.
The data model will be made available on SQL Driver for YouTrack API - YouTrack API Data Model.