I'm currently watching and liking a lot of japanese bass sounds also sometimes USA pop sounds and the bass sounds like a sort of synth? I mean, little or no attack and long sustain instead to have a strong string pluck. A lot of time overdriven buy controlled highs. RN I did somewhat it on my last song but was heavily processed in Ableton. I was looking about tips, compressor fast attack, slow release, ratio IDK? I'm overdriven it at my fender bass man 800 also have joyo double thruster. My personal findings: low pickups ( pickups near string hold them and sustain is destroyed). High mids at top for that creamy sound you can hear in the cellphone. Controlled highs so you not sound like an electric guitar. Also of course finger style, a pick would have a lots of attack. Still more tips are appreciated.