Can models draw LOS through other models?

Can models draw LOS through other models?

It's very well covered in Rules Reference on page 26-27 and in the "Line of sight" section on page 16.

But basically you can trace through the targeted figure but not other figures.

LoS can be traced through the figure doing the shooting, and the figure or object being shot at. All other figures will block LoS, unless the shooter or target has the Massive trait.

FWIW, I'd also like to give kudos to the design guys for adopting (creating) the LOS rules used in SW:IA.

Having played several games that require / incorporate LOS, this game by far has the most simple and eloquent means to determine LOS. The whole 'one corner to two corners' thing makes it very simple and if you imagined yourself "looking" out of the mini's eyes, it makes total sense.