There are many examples of Hybrid Shales. There are popular examples from Canada and Australia including:
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Triassic Montney (CA)
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Colorado Group Shale (CA)
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Tinowon (AU)
According to the Canadian National Energy Board (NEB), hybrid shale gases where the originally deposited mud was rich in sand or silt, therefore having naturally higher permeability and greater susceptibility to hydraulic fracturing.
The above mentioned Montney is so rich in silt and sand that it is often referred to as tight gas, as it has been in many NEB publications. However, unlike typical tight-gas plays, the natural gas in the Montney is sourced from its own organic matter, more typical of shale gas.
A generic tertiary diagram of unconventional's including tight gas, CSG, and shale is shown below: