I've seen a lot of videos of Lifmunk effigies farming but they usually stop at 175. Now with the Sakurajima update, we need 225 Lifmunk effigies to max out the capture rates and you actually posted the route for all 400 of them. Huge respect brother.
At the time of making this there were 439 claimed known locations in the online resources I referenced but I found 12 that were duplicates or just outright not there for myself. If it's not in the video it may be one of these or just extremely well hidden and I missed it somehow. I did search extensively the areas around each of the missing/duplicate effigies.