I was talking in general (not about your question).
I see users relying on New NUS Grabber GUI and complaining it doesn't have the game they want.
It's because that program is parsing Wiiubrew page to list the existing TitleID instead of parsing Nintendo's database.
Wiiubrew is not updated, so it's missing games and the update version is outdated.
Nintendo database is ALWAYs up to date. but nobody released a program to get advantage of Nintendo website, they prefer relying on outdated user driven database.
About your question now:
00050000 eShop title
00050002 eShop title demo
0005000C eShop title DLC
0005000E eShop title update
00050010 System-app, last byte OS version
0005001B System-data, last byte OS version
00050030 Background title, last byte OS version
If you dumped your files on your NAND, you probably found some Titles which are not available on NUS (they never released an update, or are not downloadable, updatable, etc.)
that's probably the case with your files starting with "0005001B", which are system-data, and are probably installed at manufactured time.
00050000-10164900 it's not on EUR eshop.. Edit: not on USA eshop either.
00050000-101A6000
0005000B-10197B00
00050000-101DAD00
00050002-1010B301
00050000-10163200
00050000-101DE000
00050000-10204F00
00050000-10164700
00050002-10175B01
none of them are on tagaya. (nintendo eshop database) so they probably are titles pre-installed on your console. or were demo for a limited amount of time and removed after expiration.