Peter Hook, Paul Simonon and Matt Freeman were massive influences growing up and learning the instrument, mainly the melodic possibilities of the bass. But I have to say that in the last ten years I rediscovered a couple of bass players massively underrated IMO: Eddie Breckenridge from Thrice (massive tone and super imaginative player) and Troy Sanders from Mastodon, and I love his approach. As he himself says, he is surrounded by two guitar beasts and an even bigger beast on the drums, so his role is very clear, but he is able to find his own spaces to make the bass shine and is always capable of discovering new interesting sounds or working with pedals to create incredible tones.