Original Poster / Latest Reply avatar on mobile

[Lilly]

both of these work on mobile and desktop.

adds the author column and has option for the latest poster in posters column:

Discourse Topic List Author & Posters

Summary Adds a topic author to the left column of topic list pages, as well as an option to only display most recent poster in the default posters column. Author avatar can also be sized and shaped. Preview https://discourse.theme-creator.io/theme/Lilly/discourse-topic-list-author-posters Repository https://github.com/Lillinator/discourse-topic-list-author-posters Install Guide How to install a theme or theme compo…

Adds the author column and removes the posters column:

Topic List Author

Summary Makes the topic author appear instead of posters and allows changing the placement of the author column in topic list pages. Repository https://github.com/discourse/discourse-topic-list-author Preview Preview on Discourse Theme Creator Install Guide How to install a theme or theme component New to Discourse Themes? Beginner’s guide to using Discourse Themes Install this theme component …

i think this one is mobile-only:

Show Original Poster Avatars

Summary Show Original Poster Avatars is a simple theme component that shows the profile picture of the original poster (OP) on the mobile topic list, rather than the latest reply. Preview Preview on Discourse Creator (mobile only) Repository Link https://github.com/discourse/discourse-mobile-op-avatar-component New to Discourse Themes? Beginner’s guide to using Discourse Themes Install this theme component Featu…