In short, yes. I definitely don't own as much as some people, but I'm still pretty proud of what I've got! Covid has kinda limited where I can order from due to shipping and whatnot, but luckily Amazon Japan still ships to the US via DHL (and for a reasonable price so it's a great deal). For preorders, I have Umi and Kotori All-Stars nesos that are set to release next April (I believe that they're normal jumbo size). I also have a wall-scroll from EJ Anime featuring the µ's second years set to release next February (shipping was a bitch but it's worth it lol). I have the A song for You! You? You!! Umi neso coming too, but who knows when that'll show up.
As a side note, I made the NicoMaki/NozoEli thing back in 2017 during my senior year of high school. In retrospect, I should've included it in my post the other day but that's neither here nor there.
If you missed my original post a while ago, I do in fact own every single µ's single (main group, subunits, solos, etc.).
Since I'm super behind, I'm not going to be writing anything, but if you're curious about why I put them where I did, feel free to ask! As a side note, I actually "made" the signatures myself! µ's was pretty easy, but Aqours actually did require a bit of effort. Enjoy!