The cleaver weapon not showing on the Japan town apartment stash wall is a bug that returned with patch 2.3, unfortunately. (along several other older bugs). Mine won't show up either, only in that apartment. I'm sure we'll see another bug fix patch in the future. Something must have happened when they updated the game. Judging from the symptoms I'm seeing in my game, it seems like they might have mistakenly taken the patch 2.1 rather than the patch 2.21 game file, to update. So all the bug fixes leading up to patch 2.21 (the most stable patch) are nowhere to be seen.
I see you got the Chesapeake smart machine gun though! Mine never dropped.

Instead, I now have two Buzzsaw iconics in my stash, which is normally impossible. haha.
I'm on PC though, so I can just drop it in my stash using CET mod command lines.
It's really remarkable how they managed to get this game working well on the Switch 2. Despite it not hitting 60fps, it still looks visually pleasing to play. Very cinematic.
Cyberpunk 2077 and Phantom Liberty gets better with each passing playthrough, imho. I already have 5 in my belt. I'll be running another after I'm finished with my Witcher games.
Hope you continue to enjoy the game!