I currently build 64bit LineageOS for the LG K20 Plus which is extremely similar to the LG K30 Plus. I would like to start supporting the LG K30 but I don't have the device or know anyone with it to pull stock configs from. If you have an LG K30 and want to see custom ROMs brought to it, please send me a message or respond to this thread and I'll do what I can to get you hooked up with LineageOS.