Anything from Bose or High End makers, the speakers are NOT going to be ideal for Rap.
High End manufacturers favor range and crisp, accurate reproduction, not punch.
Rap music wants the bass to punch (knock).
If you want that sort of experience, lean towards brands that also market in the Club and Hip-Hop demo. They know what their demographic is looking for and will tune the ports and drivers with that goal in mind.
Beats (Obviously)
Harmon
JBL
Cambridge Soundwork
Keep in mind that you can only get so much Bass from a Bluetooth speaker. Physics are working against it.