https://collab.arolsen-archives.org/de/classifications/cl_M8oytm55jqXA6uUrXuHjE
rc dpcom, maybe another short for usdpc
https://collab.arolsen-archives.org/de/classifications/cl_Y8etpPGeBjzUXaQqis8kY
rcin = most likely „rc ind“ (roman catholic independent)
https://collab.arolsen-archives.org/de/classifications/cl_tNKHdofY2HjdndGGxKTM3
ref. cws = „reformed“ (evangelic) cws see above
https://collab.arolsen-archives.org/de/classifications/cl_Y1cJbtdfU5g7aDqJfbAnF
ANCHA seems to stand for either „The Armenian National Committee to Aid Homeless Armenians“
or „American National Committee for Homeless Armenians“
https://collab.arolsen-archives.org/de/classifications/cl_Jrc2u2hPwZJ2jAm799DbD
ACAPPP not found, most likely a typo for acrpdp
https://collections-server.arolsen-archives.org/H/SIMS5/03020104/0220/164139005/001.jpg
https://collab.arolsen-archives.org/de/classifications/cl_1dkTYHFpsFSNUwqs6aB7U
arm = armenian (church)
https://collab.arolsen-archives.org/de/classifications/cl_s5qYgyBR3xvgE1fWE391x
Sponsor „jcwc“ not really found, could be "Jesus Christ Worship Center Jesus Christ Worship Center, but no info about history found, might rather be a #typo for „ncwc“ …
https://collab.arolsen-archives.org/de/classifications/cl_VwbFHyd2ECZsVtBoHp45i
IRRC see International Rescue Committee - Wikipedia
mentioned also in routebleue´s comment above
https://collab.arolsen-archives.org/de/classifications/cl_ZCrQb5Z3r5cZoxBwwXs8x
Religion „moh.“ is most likely „mohamedanisch (muslim)“
e.f.k. = Evangelische Freikirche?
https://collab.arolsen-archives.org/en/classifications/cl_vJ6Dgb1WyT8Rp3dqtE5fE
Also appearing here: https://collections.arolsen-archives.org/en/document/81793467
I think you´re right, although I couldn´t find any direct evidence online. I added it to the list.
„e g“ for nationality? Any ideas? I found this for the second time, first time I thought any typo, but now I am sure it has a meaning. There is also another entry in this thread with the same question.
It’s hard to find in a thread, it’s a note from moewenzahn, quite at the beginning:
e.g. = ethnic German
No worries at all, it is really, really hard to find 
Thanks a lot - sorry I asked again, really tried to find it, but didn‘t see it.
