What do you know about the "watchers?" I currently have this being who called itself "the visitor" who does exactly that. This "visitor" often relays information back to me in a way that is mutually understanding to interpret due to the fact that it cant say too much. From my understanding, its purpose is to make sure Im not doing anything too wild because "everything but nothing" depends on it. And to handle this situation that happened. I also encountered another one who calls itself "the history manager" which gave me a task due to certain traits that I posses. I suppose that its important to mention that "the visitor" stated that it watches over the other 2 puzzles as well.
These do not sound like specific kinds of beings. It seems more like job titles. Ways of identifying them personally by identifying the role they play. The visitor is a being that visits you. The history manager might be a guide who'se role is to open up gateways into your past. (Maybe past incarnations?) Likewise a watcher might be either a simple observer, a gatherer of knowledge and experience. Or, it might be a protector who watches... as in guards or watches over you.
On the sorts of levels where guides (and even us, while between lives) dwell, specific names aren't so important. Most often, when a person connects to a guide (or guides) the names they carry are for your benefit. As such it is not uncommon for their 'name' to be a title or role instead. An identifier based on the role they are there to play within your life.
Think of it as 'the entity who visits me' or 'the entity who manages my past' and you will also have a good idea of what they are there to help you with... what sorts of things you can expect to learn from each being.
My own guidance comes from a single entity, who fills many roles. So I have a name to use instead of a title to call. My Great-aunt connected with a group of beings that presented themselves as simple light and spoke as one, so she referred to them as her council.
There's a lot of variety and often I find that the form a guide comes in (shape, appearance), and how they present themselves (name, title, etc) are both just other ways they provide us things to learn from. Perhaps spend some time exploring what the role of a watcher might represent. Same for your 'visitor' and 'manager'. Ask yourself what it means to visit. What a manager does. The reasons someone might watch. I think it might provide you with some insight.