We'll create fresh WordPress site with Typing Animation Block installed. You have 20 minutes to test the plugin after that site we'll be deleted.
You can use the block inside the Gutenberg editor as you would use a headline block. You can find it in the common section. You can change the text that appears in the animation in the editor (Number 1 in the screenshot). The different sentences are separated by a pipe (|). You can format the text by using <i>...</i>
for italic or <b>...</b>
for bold text. To change the underlying element that is used in the html of the page (h1 to h6 or span) there is a dropdown menu in the block toolbar(Number 2 in the screenshot). In the block panel you find different options to customize the speed, looping and other options of the typing (Number 3 in the screenshot). The underlying library used is Typed.js. You can find more information in the repo
Icon made by freepik from www.flaticon.com