Hi @Andrew Sosimenko, Welcome to Microsoft Q&A. Could you please share more details about your look up column? I will be grateful if you can upload a screenshot of the lookup field values in that list and describe how you want to sort them so that I will understand you better. Thanks for your understanding:)
---If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.