That’s a good way to look at it.
When I got my initial commercial I did it in a more unconventional way. I first got my CMEL first before the CSEL. Most folks will do commercial single then multi. Doing commercial in a multi not only gave me the initial commercial with the complex but the multi rating at the same time. Only had to learn one type of complex as opposed to two. I can’t really think of any multi’s with fixed landing gear. The single was only an add-on and as a result I was able to use a 172.
But if you put it in the way as you did with the tailwheel endorsement, it sounds like it could be more of a sign-off.