The sharing plugin I use (icons visible on this page, top of post and floating bar on left) recently added Truth Social to its premium version, which you can learn about here.
For WordPress blogs, this is the only option I know of that includes Truth Social. Gab has been included in their free version for quite awhile.
The plugin also includes a follow widget (see mine below near page bottom). While they include YouTube, they fail to include Rumble.