I don't think that is creating the desired behavior. According the the WMS
specification:
Zero or more Styles may be advertised for a Layer or collection of
layers using elements, each of which shall have and
elements.
The style's Name is used in the Map request STYLES parameter.
Which would look like the following in the Capabilities document for a layer
that has two styles:
<Layer queryable="0" opaque="0" cascaded="0">
<Name>VIIRS_NOAA20_Thermal_Anomalies_375m_All</Name>
<Title>Thermal Anomalies and Fires (375m, All, VIIRS, NOAA20)
...