I need to load 6000+ searchable items as combobox dropdown selection items, but all of the approaches I have used do not work.

Power Apps has a 2000 item limit for delegable data sources, but I need to load 6000+ items from a spreadsheet on a SharePoint page. I tried to load the static data to get around the delegating limit, but when I filter the data to narrow the possible items (one of the design specs I must follow) it shows no results. After trying several attempts I determined that anything I try to do that doesn’t use the static data as is malfunctions.

Then, I tried to use a collection by loading 2000 items in at a time, but I was not able to make this work either.