except for pogostemon stellatus, I have tried HC, ET, hairgrass no problem even with temp around 28-30C.
There maybe something wrong with you tank setup. For planted tank you need to have balance between substrate, CO2, light and fertilizer. Temperature not the main concern although it does change how your plant will grow or how the plant will look like. As long as not to high (continuously above 30C), it should not kill your plant especially not the one you mention. My Personal experience, there are only handful of specific plant that can't grow in high temp such as Madagascar Lace Plant (until it proven otherwise
).