Is any language known to contain a glottal stop [ʔ] that isn't tenuis? For example, an aspirated glottal stop [ʔʰ], a palatalized glottal stop [ʔʲ], or a labialized glottal stop [ʔʷ].
CORRECTION: It turns out that tenuis is not the right word here. I mean glottal stops with a secondary feature, such as a aspiration or labialization.