These types of receptors are slowest acting.
These may be present in the cytoplasm(glucocorticoids, mineralocorticoids and vitamin D)
or in the nucleus(T3,T4,retinoic acid, PPAR, estrogen, progesterone and testosterone).
Both the type of receptors finally act by nuclear mechanisms. i.e. by affecting transcription.
All the intracellular receptors are considered a part of nuclear receptor superfamily.