Ludwig reads the item cache in your WDB folder - that is my understanding. It works well.
TooltipExchange does support item linking by typing. Or if it doesn't I've got some other AddOn that does that, but I can't imagine what it would be ... it never would have occurred to me to try that, actually. I know it's a popular feature of such mods but it's not something I do (I can never remember the names of things, and so I Shift-Click instead). All I can say for certain is that I just tried it, and it worked. ;)