After I recently dived into the Lemmy world and found out which API route I needed for a Lemmy integration as a Mentions United Provider Plugin, the rest was no longer particularly difficult, because the data is very heavy due to many redundancies, but easy to process. So my new plugin is ready and running on this blog to display Lemmy interactions …
https://kiko.io/post/Mentions-United-Lemmy-plugin-a-few-updates/
No, not directly, because it depends on the syndications stored in the Frontmatter of my post. But since I have also included Webmentions and Lemmy sends one when crossposting, at least this would be displayed under the post.