2536: At rest

Unclued lights are three sets of three words of a kind, along with a name which connects them all (two words). Something that this name should possess (5), which is also a thematic item, must be highlighted in the completed grid.

Across

1 Always bored by job, like rebellion (8)

8 Dancing girls wanting a relief (4)

12 Follow it to leave bathroom (5)

14 Going furtively out of east, moving sinuously (7)

16 A lot of Italian beer for Eva? (5)

17 Biblical land about to get bread (6)

21 Image about one mount joining several states...