Interesting — this is what my quote-post looks like in an application that doesn't support Mastodon-style quote-posts yet.
@reiver@reiver ⊼ (Charles)
Then there's Phanpy, which just expands the preview area when linking a fedi post. Which I realize is a different implementation, but depending on your client your post still might display as intended.
If you have a fediverse account, you can quote this note from your own instance. Search https://olifant.social/users/oli/statuses/01K5ETCAZZXGCXATJ2MHMM2YD3 on your instance and quote it. (Note that quoting is not supported in Mastodon.)

