Sioux, for muck dives in/near Sogod Bay, must-dive sites are Malitbog Lembeh and Marayag. Napanthau, Jun's Pinnacle, etc., are beautiful coral reef dives, but for my buddies and me, the dives we did at Malitbog Lembeh and Marayag really made the trip each time (twice now for me, 3X or more for some buddies).
Malitbog Lembeh is a shore dive: Peter's will drive you to the village of Malitbog, where you can stroll into the silty substrate near the mouth of a small creek. It is shallow and usually worth a 75-90 minute dive, depending on your gas consumption rate (tip the DM later …). We saw a handful of flamboyant cuttlefish, a handful of blue-ring octopuses, other cuttlefish and other octopuses (my buddies saw a wonderpus but I missed it), Coleman's shrimp, miscellaneous seahorses, ghost pipefish, etc. My buddies and I asked Peter's to forget the boat and take us back there again and again. All sorts of great macro critters, only a few of which I have mentioned.
Marayag is much less often dived, because it's a boat ride away. It can be combined with an excellent coral reef dive. It's dark silt, with hairy frogfish a prime attraction, in addition to much of the stuff I mentioned above.
Request those sites specifically, or you might not go there (they're like pearls before swine for the newer divers who don't appreciate muck …). That's especially a problem with Marayag, because unlike a shore dive, with Marayag it's on the boat so the dive center will try to achieve consensus among the divers … most of whom want beautiful reefs, not silty muck.
Sorry, can't recall specific Tubbataha dives, as those were too long ago for me. Never been to Dumaguete