in BIAB 2016, Just installed build#430, do a fast rebuild, then a slow rebuild of the Stylepicker. Operation done twice.

I got following PG Music styles in the User category:
_JORGBA
_JORGNB2
_ORG85
_ROUTROK
=C_CLAGP
=JWALTZ1
=OLAN_G
=SLSBOL1
-CHORD2
-COLORS
-COWBOY1
-DEUCES
-EV8WLZ
-POPREGA
-TOBY2
-POP_3-4
-PSYK128
-REBELS
-ROKBLUS
-SEEKER
-WEEDS
-BALAD2.

Note that all my own user styles are really well detected.

I looked into some of the styles you listed here. You likely got those styles a few years ago, but they were subsequently renamed or removed from the program. We should suppress them, so they don't show up in the StylePicker list. For example, the style -SEEKER.STY dates from 2007 when RealDrums came out - at that time we were making a RealDrums version of every MIDI style, but now RealDrums are substituted in automatically, so it is the same as the style SEEKER.STY. Another example is _JORGBA, that is the same as _JORGBAS. You wouldn't have noticed these in 2015, since we didn't have BBW.LST entries for them.

Thanks Andrew, that is clear.

A good job already done with the build#431, but I still got some unwanted styles in this category:

_JORGBA2
_ROOTROK
_CHORO2
-POP_3_4
M_JAZSLB
_BALAD2
_TOBY2.