what strains are you growing, what is you current daylight time (southern hemisphere I assume)? your summer solstice (longest day) musn't have been that long ago, no? winter solstice here was december 21. some plants just take longer to show than others... yes growing uniform hybrids or clones in an indoor setting is more predictable, but also much more energy and capital intensive.... I'd love to be able to grow a few plants outdoor without being bothered.
but don't worry, all of your plants will show eventually... sometimes plants will show very early (early july, northern hemisphere) others will take until august.