The genus on three of them is fairly simple, they are bolded below. Oncidiums like bright light (2,000-4,000 foot candles), Masdevalias like lower light (1,200-2,000 foot candles) if the "Gypsey" is a Brassolaeliocattleya then you may be looking at bright light (again 2,000-3,000 foot candles)...someone else is welcome to contest that, but according to my books, that is the range. If you happen to notice any of your plants looking stressed and the leaves turning a purple-ish red colour, that means they are getting "sunburnt" from too much light and then moving them away from your light source should fix the problem. Some plants however do not seem to mind a little extra light.
I have a Masd. Celtic Frost...Masdevalia
Sharry Baby Oncidium
Rainbow "The Gypsy" - not sure that is enough info? Need more info or someone else may know...I found this however Brassolaeliocattleya Momilani Rainbow 'The Gypsy' but I am not sure if this is correct, you can probably do a Google search or a similar one to find a pic. I think the heritage of the plant is Lc. Mari's Song x Blc. Orange Nuggett
And oops - I know my other one - it's Oncidium Twinkles Oncidium
Hope this helps