There is no field that does this natively. The "updated" field is populated by changes, but those aren't all drawn from the same place - Jira updates it as part of workflow or edits (see the table changegroup) and comments (table jiraaction) and I think there are probably other places. It does not copy out who made the update from the process that did it.
I'd be tempted to write a plugin to provide the field, as a derived field. But I don't know how complex that would be.
Oh, and I do really like the idea of this field, it's potentially very useful.
I've also been looking for something like this recently. The closest thing to this that I'm aware of is the "participants" field provided by the Jira Toolkit plugin. 'participants in (currentUser())' will catch pretty much every issue you've interacted with, but it still misses some, which makes it kind of useless.
Badges are a great way to show off community activity, whether you’re a newbie or a Champion.Learn more
Hi Atlassian Community! My name is Shana, and I’m on the Jira Software team. One of the many reasons this Community exists is to connect you to others on similar product journeys or with comparabl...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs