Thank you for the localization!
the top line is the entity name, this should be entity-name.<name of the thing>-l (the gui is actually the loader gui).
hps__ml-fast-miniloader-l=Fast miniloader
hps__ml-express-miniloader-l=Express miniloader
hps__ml-turbo-miniloader-l=Turbo Miniloader
hps__ml-stack-miniloader-l=Stack Miniloader