If you're just running Rubrics I wrote a quick rundown of the typical build here >>63315621
If you have Tzaangors your list will probably look something close to this:
Rubric Gunner (Demolitions)
+Autopistol & Chainsword>non-specialists
+Icon of Flame
+Autopistol & Chainsword
That there is a solid well-rounded list. The comms Tzaangor will be best buddies with your gunner, and can even support your zealot and generic tzaangor as well. For objective-based missions I'd opt to drop the generic rubric and take additional tzaangors for more bodies on the ground; you can even choose to drop the warpflamer rubric as well if you need to drown the board in bodies. I like the default tzaangor blade on the zealot because he LIVES for close combat, but I prefer the autopistol & chainsword for the others, as it gives them a bit more versatility; being able to shoot at enemies while plopped on an objective is good, and you still have the option to tie up high value enemies in melee as well.
Hope that helped!