I am still trying to figure out whether lists are public. I am pretty sure that you cannot follow other people's lists. I guess it could be of interest at least to browse them. For example, here is the link to my "open knowledge" list -> https://qoto.org/web/timelines/list/1829
@NehaKhazanchi on the image you posted, lists are the fifth button from the left, the "bullet list" one.
When you click on a profile you can choose to add it in a list. You can visualize a list timeline showing only toots from people within that list.
On twitter people used to build and maintain lists of accounts talking about specific topics to have a sort of automatic "digest" of what's going on in that field.
@v_iacovella oh wow, thanks! This seems useful 👍🏻 I will use it!