^ As can already be seen in the infographic, Barq-1 has smaller dimensions than Barq-2 (Taer-2B). So Barq-1 is not actually a Taer-2A but a slightly slimmer missile wit the same 50 km range.
Yes, I remember reading that its CWIR is used in bad weather conditions when its EO/IR sensors aren't effective. The missiles then switch to their SARH guidance mode.
To add to what @TheImmortal has already said: Taer-3 is not directly competing with Sayyad-4. Taer-3 has a stated range of 200 km but against low-maneuverable targets (e.g. MALE/HALE UAVs, AWACS, bombers). Sayyad-4A/B are higher performant. The part about Sadid-630 is mostly speculation. Judging...
^ 180 km range for such a small mini-AShCM is really impressive. It seems to be based off Heydar ALCM. A containerized version with foldable wings would easily fit in Nasir (CM-90) missile containers for Iran's missile speedboat fleet.