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Hover your mouse over the number next to the heart symbol.

On the pop-up click "See All"

It will pull up a table with details.

Note:
As far as I can tell this doesn't work until the number of voters is >3

You can check this page https://hive-engine.com/history/LEO (for example) and anything you have with "Tokens Issue" is contract based issued tokens for something you have done in the domain of LEO token. Usually this is (can be) your curation.

Maybe @khaleelkazi can comment more about if there is any other issuing scenarios.

On other tokens, they usually use the comments contract to reward users based on their stake and posts tags.