Sources

ASL: American Sign Language; https://www.handspeak.com/; https://projects.lib.rochester.edu/lsf-asl-app/dictionary/
Auslan: Australian Sign Language; https://auslan.org.au/; Flag was sourced here.
BSL: British Sign Language; https://www.signbsl.com/; Flag was sourced here.
CSL (or ZGS): Chinese Sign Language (中国手语); https://www.spreadthesign.com/en.us/search/; Flag was sourced here.
DGS: German Sign Language (Deutsche Gebärdensprache); https://www.spreadthesign.com/en.us/search/; Flag was sourced here.
DST: Danish Sign Language (Dansk tegnsprog); https://tegnsprog.dk/; Flag was sourced here.
ITM: Icelandic Sign Language (Íslenskt táknmál); https://www.spreadthesign.com/en.us/search/; Flag was sourced here.
KSL: Korean Sign Language (한국 수어); https://www.spreadthesign.com/en.us/search/; Flag was sourced here.
LIS: Italian Sign Language (Lingua dei segni italiana); https://www.spreadthesign.com/en.us/search/; Flag was sourced here.
LSF: French Sign Language (Langue des Signes Francaise); https://projects.lib.rochester.edu/lsf-asl-app/dictionary/; Flag was sourced here.
LSQ: Quebec Sign Language (Langue des signes quebecoise); https://lsq-fr.ca/; Flag was sourced here.
STS (or SSL or TSP): Swedish Sign Language (Svenskt teckensprak); https://www.spreadthesign.com/en.us/search/; Flag was sourced here.
USL: Ukrainian Sign Language (Українська жестова мова); https://www.spreadthesign.com/en.us/search/; Flag was sourced here.
GENERAL: Emojis/Visual Icons were sourced here.; Assistance with webcoding/web-design was sourced here.