Is there a real word to replace "examplary"? (note: not exemplary)
Solution 1:
The adjective "instantial" seems to have the exact meaning sought.
(SOED) Of or pertaining to an instance or instances; providing an instance
"Instance" can be considered a good synonym of "example".
Addition providing a comparison of frequency of use with the possibility of using "by way of example" instead (term proposed in user Greybeard's's answer)
