It is. These are just my artistic interpretation of various logos.
If you use them on your site, you need to give copyright notice to the original owner's ( not me, the company ). That's why I say this:
Just be sure to credit the original owners / trademark holders of the logos!
For instance, look at the bottom of various Itch.io pages, and you'll see Twitter's logo & Facebook's logo. You can use these logos when linking to their sites, people have been doing that for ages. Just don't claim ownership, endorsement, or partnership of any kind. Pretty simple.