Tile Imagery Layer Not Allowing To Style By Unique Values

[JustinH]

We have a layer for the entire state of Colorado that we are trying to upload as a tiled imagery layer to Arcgis online. We have good luck with our other statewide layers to be able to style them as their unique value. Unfortunately, this one only allows us to either "Stretch" or "Classify". This is a categorical Raster set that classifies pixels as a specific Surface Fuel. Here is the Tile Layer that we posted (NOT THE TILED IMAGERY LAYER,  just showing a reference to what we want the tiled imagery layer to look like)... We want this to be a Tiled Imagery Layer since this gives you a little more freedom with styling/analysis etc. 

I am wondering if it is because there are so many values (47) and AGOL is not allowing them to be classified by a unique value. Some others think it may be the category that is limiting AGOL because it is a long string. 

Any ideas are helpful. Thanks! 

[JustinH · Accepted solution]

Okay.... We figured it out. We used this documentation to upload a table with the imagery layer. Though with two of us working on this, some of the options were never present and then magically appeared. Thanks @RussRoberts for your willingness to help. 

[EllieLinden]

For others running into this issue: When selecting the raster file to upload after clicking "Browse," I needed to select both the TIF and the DBF files in order to successfully pull in the attribute table and symbolize using the "Unique Values" option.  

[JustinH]

It was weird that we had no issues with any other Raster Layer we Uploaded (>10). The TIF had everything stored within the file. The RAT also was available if you brought the layer into Pro but when uploading to AGOL it seemed to have vanished.