I suppose that using something like PostHistoryType.Id=2 and PostType.id=5 you could find a list of tag-wikis you have created.
Try for example here for a somewhat similar query (although that query was designed for answers and questions, so the results do not look that fine for tag-wikis. There is definitely a space for improvement; perhaps there already is a query for this.)
Many users also create tag-wiki, when they create a tag. If you did so, then this should be a subset of the list of tags you have created.
Of course, this is not the same thing as what you wanted, but it might be some approximation (at least in some cases.)
One of the answers in the post linked in Arthur Fischer's posts mentions this query:
The tags where the oldest question with this tag was created by a given user. It can also be considered as an approximation of the list of tags created by a user.
The above query only looks at the oldest question with the given tag. Here is another query which also looks into the PostHistory: Tags created by a specific user. This query also returns the tags which have been deleted since the creation. For example, the tags which were created just as a consequence of a typo in the tag name. Still, the query is not completely reliable, as the question where the tag was created might have been deleted (and the PostHistory table does not keep the data about deleted questions).
Some queries related to getting some information about the tag creator can be found here: Can you tell who created a tag. I will also add the link to this question: What is the name of the (now removed) tag for which this Taxonomist badge has been awarded? It shows that the situation can be a bit more complicated - for example, merging two tags changes the revision history, so in such cases the data from SEDE might show something different from the situation at the time.
You can find at least one tag you have created - namely the one for which you have obtained the taxonomist badge.