In a presentation by Brend Wanders about his strata plugin he shows some additional plugins as well.
These plugins don't have (yet..) a own plugin page on dokuwiki.org, but you can find them at
https://github.com/bwanders
These additional plugins add charts and templating in combination with the strata plugin.
I don't see documentation or examples somewhere of these additional plugins... So maybe worth to ask Brend in an issue for some example usages?