Ok those are EP. In Beau the DC mobs are generally the ones higher up from the starting area, if you went up the very first ramp on the way to TE1, those and everything further upward are all DCs so far as I know, they are also all Hydra mobs. One of the easiest ways to remember what mobs are DC and what ones aren't, the 10 minute TEs are all spread out in the areas with EP mobs, the 1 20 minute TE is placed in an area with DC mobs, so if you know where the 20 minute can pop, you should know where DC mobs are for the most part.

Also as a note I would do Chains areas like Valk or Bub rather than original Dynamis areas like Beau or the cities, but thats more a matter of preference I suppose since I always hated the original zones.