No, they are not as extreme, but you still have to keep an eye out for what they claim.
Here is an useful tool:
https://www.adfontesmedia.com/wp-content/uploads/2017/11/Third-Edition-Full.jpg?v=402f03a963ba
Yes, it is from 2017, so it might be somewhat outdated.
I use everything from MSNBC, CNN to The American Conservative for perspective and Poltico, the Hill, ABC and CBS for general news as to politics.
For far-left, they are there along with the far-right.
Now right now, the far-right is more dangerous than the far left, but that is now. You still have to watch out for a swing in the opposite direction.