The first crab may be Enoplolambrus carenatus (H. Milne Edwards, 1834) or Enoplolambrus pransor (Herbst, 1796)
Second may be Liagore rubromaculata
Third one may be Dorippoides nudipes Manning & Holthuis, 1986 but it is very close to D. facchino (Herbst, 1782) so you need to examine the specimen carefully.
More detail photos or drawings of male G1 and othre characters are required for final identification.