Skid Row and Slaughter don't sound much like BJ other than being in the broader category of hard rock/metal.
SR really couldn't have been influenced by BJ since they were contemporaries.
In fact, one of the 2 founding members of SR, Sabo, was a childhood friend of Jon and actually toured with the proto-form of BJ as they promoted their first single.
Plus, SR had a more punk and lyrical rock mixed with metal sound, and their 2nd album was metal and not "hair/glam metal."
Slaughters frontman, Mark, was also a contemporary of Jon, and in interviews had stated that bands like Black Sabbath, Van Halen and the Beatles were influences
Dokken (under a different name) was formed in 1976; BJ was formed in 1983.
Firehouse was also a contemporary and Leverty stated that back when he was doing covers, he did classic rock, along with hard rock and melodic rock with some metal thrown in.
Lot's of the Scorpions, Led Zeppelin , Van Halen, along with Ozzy, Rhoads, Judas Priest, and going back to Blue Oyster Cult; no mention of BJ.