Encyclia adenocaule not the easiest but doable think cattleya conditions with clearly rest period.
Thunia alba var. alba (syn marshalliana) Easy to grow I grow mine in my living room and it flowers every year. Plenty of water and fertilizer when growing no water during dormancy intermediate temperatures.
Cattley purpurata (formerly laelia) in all it's variations. Fairly easy to grow. Standard Cattleya conditions.
Stanhophea nigrovialacea the only one I don't have the place to grow.
Laelia anceps var guerrero Cattleya conditions clearly reduced watering during dormancy.
There are a lot more of course but this is pretty close to my personal top 5.