First I found "Is a", which works only with items. While description says that it works only with items, the title does not. When compared to "Is Unit a" it reads more like "check whether this object is of that type" and makes it look generic, despite being similar to "Is Unit a". I'd suggest renaming it to "Is Item a" to keep it consistent and prevent confustion. At least it confused me, so much that I wanted to report it as a bug first.
Second one, I tried using "Is Unit a", following an example. It still gave me false, even though as seen on screenshot, both are construction. Description says "unit frame type", so I suppose it compares in terms of Worker, Scout etc, and construction is not that. If this node is specific to unit frames, it would be nice to rename it to "Is Unit Frame a", or I could be understanding it wrong here.
Finally, what I needed was "Match", which works perfectly, but finding it is a journey, and somewhat frustrating one. I basically found it randomly, because it is named so differently from other similar nodes. I'd say something like "Is of Type" or "Compare Type" would work better, as it would show up when looking up for these types of nodes.
While descriptions usually contain useful info, it works when I've already found the node I needed. But when I'm in discovery stage, I first need to find it by name, and that was hard.
