It’s funny how perspective works. You point out how the pick would help clean up the sound of Sting and Novoselic, and I picked those because you can hear the pick noise on those examples.

6 of 1/half dozen of the other. And when I saw Lounge Act isolated, I was excited because I thought there would be way more incidental noise in it. Aggressive rock picking with a ton of brightness and grit in the bass tone, with a bass line that requires a fair bit of hand movement. I was surprised it was so minimal. It was in there but not to the extent I expected.
I do like the idea of asking the producer for a reference track of similar style with isolated bass guitar. It’s a completely reasonable ask, and will help both the OP and the producer get on the same page. Especially if the OP can ask for the reference track in the context of providing their own reference tracks with reasonable amounts of bass noises still in them.
The flip side is, was the reference track recorded to tape or digitally? If it was recorded in the digital age with all the errant sounds digitally edited, they’ll have to differentiate between quiet playing and reasonably noisy playing that was digitally edited to be quiet. But that editing is time consuming aka expensive. And so it could help temper expectations of the producer if that’s pointed out in the context of “yeah the Uptown Funk reference track is noiseless, because it was recorded in the digital age and painstakingly digitally edited to not have anything out of place.”