Lynx¹ and NetSurf both display history in a tree, good to see browsers with "modern" engines catching up! (I think Firefox's Tree Style Tab extension was the closest alternative available before this)
¹requires configuration (under "Special Files and Screens", set "Visited Pages" to "As Visit Tree")
¹requires configuration (under "Special Files and Screens", set "Visited Pages" to "As Visit Tree")