To appreciate Phil Lesh’s approach to bass playing, give a close listen to the Dark Star > Spanish Jam > Lovelight, with the Allman Brothers, Berry Oakley on bass, 2/11/70. Both Phil and Berry are mixed up in the recording and you get a wonderful contrast and compare between two terrific bass players.
https://archive.org/details/gd70-02-11.early-late.sbd.sacks.90.sbefail.shnf/gd70-2-11d2t1.shn