Conical bushings for more turn, barrel for more stability. I haven’t had those indy bushings, so I don’t know if they firm up, but I’ve had quite a few bushing like that.
It’s been awhile since I’ve run bones bushings in ventures, that was my go to for quite some time. Maybe they don’t fit right. These days I tend to run everything stock, including the top washer, and then just wait for the trucks to break in. I can see why some wouldn’t want to do that.