Posting this here instead of orionfeedback.org as I feel this is an issue with the extension rather than the browser (in this case Orion). When setting up the Kagi Translate Chrome extension, the initial target language options are limited, particularly in terms of the English language options given. When delving into the extension settings after setup, more languages are offered that reflect the full range of languages available via Kagi Translate's site directly. See the below screenshots for reference.
Setup
Settings
