Applescript to list swatches in swatch panel in a text box

it was only searching page items and then not listing spot colors that were used in the placed eps files.

There’s no way to check an EPS’s spot colors from within InDesign, so if you want to include spot colors that are brought in via a placed asset, there’s no point in looping thru the page items and text. The only choice would be to simply output the used swatch list—the code without the page item and text loop:

tell application id "com.adobe.indesign"
	tell active document
		delete unused swatches
		set allSwatches to every swatch
		try
			set noprint to make color with properties {model:spot, space:CMYK, color value:{100, 0, 0, 0}, name:"noprint"}
		on error
			set noprint to every color whose name is "noprint"
		end try
		try
			wb to make color with properties {model:spot, space:CMYK, color value:{0, 0, 0, 100}, name:"wb"}
		on error
			set wb to every color whose name is "wb"
		end try
		try
			set infoLayer to make layer with properties {name:"Job Info - Non-Print", printable:true, layer color:blue}
		on error
			set infoLayer to every layer whose name is "Job Info - Non-Print"
		end try

		set ul to "Used Swatches:" & return
		set ds to {"None", "Registration", "Paper", "Black"}
		delete every page item of item 1 of infoLayer
		repeat with x in allSwatches
			if name of x is not in ds then
				set ul to ul & name of x & return
			end if
		end repeat
		
		set slugText to make new text frame with properties {geometric bounds:{(item 4 of page 1's bounds), 0.25, ((item 3 of page 1's bounds) + -1), 3}, stroke color:"noprint", stroke weight:1, item layer:"Job Info - Non-Print"}
		set contents of slugText to ul
		set fill color of text 1 of slugText to "noprint"
	end tell
end tell

But as I mentioned in the other post just because a swatch is used doesn’t mean it will print. Here PANTONE Stron Red C is in a placed EPS, but G, Gray20, Gray60 are listed but they will not print: