Correct on #1, though it is not Noctuidae, but Nolidae (Nolinae).
Please could you put each photo in a separate thread in future - it makes for much easier referencing on the forum index.
The others are as follows:
#2 = Manoba brunellus (Hampson, 1893) - Nolidae, Nolinae
#3 = Hydrillodes sp. - a tricky group. This one is probably a male H. hemeusalis, but I'd need to see the underside of the forewing to be sure - the male scent patch is distinctive and separates it from the otherwise similar H. lentalis - Noctuidae, Herminiinae (or Herminiidae, depending upon which taxonomists you prefer!)
#4 = Rivula basalis Hampson, 1892 - Noctuidae, Hypeninae, Rivulini
#5 = Dichomeris sp., possibly D. corniculata (Meyrick, 1913), or D. cymatodes (Meyrick, 1916). The very similar D. simoaensis Li & Wang, 1997 also occurs in Hong Kong and is illustrated in my thesis (plate 4, fig. 30), as D. corniculata! This species (simaoensis) has just be determined from specimens by Li Hou Hun (Nankai University).