Hi Jen, welcome to OB.
picture#1: Looks like ascocentrum or some sort, A miniature vandaceous orchid
--> mounted orchid gets dry easily. I think you need to spray this orchid more frequent.
picture#2: A phalaenopsis and oncidium or related.
--> Pull the weeds out and check the roots especially for the phal. They might need to be repotted.
picture#3: I'm 95% sure that this is a Paphiopedilum.
--> they tend to like cool and damn place. Maybe in the summer, put them indoor. They tend to like moist potting media. I think the current media is too porous and does not hold water too well. Might be best to put a plate of water underneath the pot.
picture#4: Vanda teres or the hybrid
--> they like direct sunlight but avoid being exposed to summer sun. Looks just fine to me, maybe increase sun exposure a bit. Water the roots regularly, maybe 2 times a day or 3 times a day if it gets really dry.
picture#5: I can't really tell for sure if this is orchid or not. If it is orchid, probably Cymbidium.
Hope this help for starter.
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