Text along curve

[rich2005]

For a label, try ofn-bend-path.

   

see: https://www.gimp-forum.net/Thread-ofn-bend-path

Make a pair of curved paths - the envelope
Size the text up to fit length, the Layer -> Text to Path
In the Paths dock choose the text path
Apply the plugin. It is one of those right click in the path dock or use the Gimp search tool.

very quick animation: https://i.imgur.com/Qfk2ZhX.mp4