First of all, this question is not about the mouse cursor, and not about cursor shapes in a terminal or console. I want to configure the shape of the cursor while typing e.g. while typing this question in the online editor. Most of the questions I found while researching are all related to either mouse pointer or cursor shape in a terminal.
The sort of options I am looking for are: for increasing the width of the vertical line, change it to a rectangular block or a horizontal line. These options exist for the terminal, vi, emacs, but not for other editors such as Libreoffice, Joplin editor, online editors that open in a browser, etc.
The default settings in gnome settings give options only for changing the size of the mouse cursor.
I am currently using the latest Pop OS 20.10.