I’ve done a lot recently. Quite a few of them were previously ground to four inches below the surface, but in the way of planting.
Leave a couple of feet of stem for heaving on if it’s not too late.
Spade for digging, mattock for digging and cutting (I sharpened the axe side with a file which saved a lot of effort, and my good axe!), digging bar/pry bar for loosening soil and finding roots, oldest/cheapest loppers for small roots, pick axe for levering.
When you’re cutting roots, cut them at the edge of the hole, and close to the centre/stem. Gets it out of the way and lets you work underneath it.
Knackering work, but immensely satisfying. You start with a something completely immobile, work half an hour, have a heave, get demoralised because it’s still completely immobile… Keep working, it will succumb! Yearrrgh!!