Archetypes, Another Newbie Question Options

[BobChuck]

What are the various common, generalized archetypes that characters can fall into as broad rough categories?

I realize that shadowrun is a very complex system with a great deal of customization, hence the numerous qualifiers above. Still, I've looked around enough to realize that there are "niches" in the system and most characters can be roughly summed up as a combination of those. But I do not know what they actually are, which is frustrating.

Ideally speaking, the list would include a rough guide on how they work, a general descriptor stating how "invested" a character needs to be to do ""suitably well" (meaning not min-maxed, but functional), what other roles tend to pair well, and maybe even which metatypes might be more suited, both mechanically and setting-wise. Again, generally speaking. Something like:

Magician (resource intensive): magicians provide magical force and support of all kinds, able to summon/banish spirits, perceive the astral, protect other runners from enemy mages and spirits, and accomplish the impossible with magic of all kinds. Magicians are very resource intensive, requiring a large selection of specialized skills, equipment, and other resources.

Basic Combat (resource light): Harming others, if only to escape capture, is something that every runner has to deal with eventually. Whether it's with powerful magic, high tech weaponry, remote operated drones, or good old hand-to-hand, picking up the basics on how to shoot a gun and what makes suitable cover is fairly easy and highly valuable, so most runners are advised to at least learn the basics.

Just to start things off. I know there are at least a half dozen others, though I'm not entirely sure how resource intensive they are to do, or what the "proper" names for some of them are. I have not been able to figure out what a "SAM" is, for instance - the term isn't in the core book anywhere.