@reiver@mastodon.social hmm, I don't much mind the "type": "Hashtag" bit. Additional specificity is helpful in the long-run I think.
For example, tag contains hashtags, but it also contains mentions, "type": "Mention", so that actually makes sense.
Additional stuff that falls under the rather general name "tag" could also fit. Tagging a location, tagging an Event, etc.
This might also be what @evan was talking about, I didn't click through his link yet <img class="not-responsive emoji" src="https://activitypub.space/assets/plugins/nodebb-plugin-emoji/emoji/android/1f61c.png?v=f187f9278b7" title="" />