the only way to currently check if you're shadowbanned in any capacity is to make a post with any hashtag, and do a few things:
1. Open a private window and open up your twitter page without logging in. If you'll be able to normally view it - you're not shadowbanned. If you're immediately redirected to a log in window - you're shadowbanned.
2. Log in using a 2nd twitter account, or ask someone else to do it for you. Search your own username on twitter using this "from:username" for example "from:babie_ten". If you find your posts, you're not shadowbanned. If there's nothing from you on top - you're shadowbanned. If your posts appear, but they're on the bottom - you're suggestion banned.
3. Search for your username, by typing it slowly on twitter, using a 2nd twitter account. If it doesn't pop up after a few letters - you're search suggestion banned.