Sorry for the late reply. Are you looking to create a dropdown select with a value from a field in this specific list view? – if so, you can use this plugin and use the filterObj > CAML query to create a filter matching the one used in the list view: https://spjsblog.com/dffs/dffs-plugins/spjs-lookup/
Thank you for the reply. I do not know CAML but I am willing to learn. I have a strong background in SQL. When adding the CAML to filter, what tags do I need? Should I start with <query> or just <where>?