Your question is a bit vague but I'm guessing you want to know what WYSIWYG-editors are common these days, am I right? I think a good starting point to learn about a few is AlpineJS. They publish (paid) components, in combination with a video explanation.
They have information on 3 different ones. Trix, Quill and SimpleMDE. We're using Trix but that was never based on any research by ourselves to be honest :)
In the end, pick the one you like best and offers the features you're after.