This is a wee bit of html bold text and italics added. You can use Custom HTML block in the block editor too, here is a gif and below the results of the block: The Custom HTML block can be used in posts or pages, you can also write html in the Text View of…

Links to the Archives for your posts, can be displayed as a dropdown or list. Use the Archives block to display a date archive of your posts. from: Archives Block – Documentation – WordPress.org List