@fun Outside of the obvious firefox and chromium, there is epiphany aka gnome web as a relatively complete webkit option.
While not in alpine, there is the flow browser demo which is one of the fastest lightweight browser engines that's also capable of displaying most of the web(discord, youtube etc), though the ui is currently limited when it comes to tabs etc: https://www.ekioh.com/flow-browser/
You can also try servo or ladybird but they're very incomplete.
@fun I feel like I should point out that the flow browser is proprietary and has worse website compatibility than even WebKit.
Though it is better than Servo (for compatibility, not freedom).