XP-L HI, if anything, will actually be less lumens than a same-binned XP-L because the HI is designed for peak intensity where as the HD (technical name for the standard XP-L with dome) is designed for max total brightness (lumens).
Its unlikely we’ll see an XP-L2 HI because of what the “upgrade” over a first Gen XP-L is… The XP-L2 / XP-G3 (they are the same generation of technology) uses a flip-chip design which by nature is inherently bad for intensity (great for lumen/watt efficiency but it allows [blue] light to excape out the sides of the package without being converted by the phosphor at all thus loosing lumens before they can hit the optics or even be made into white light).
In short, if maximum total brightness (lumens, measured in a measuring device) is what you crave go with XP-L HD (standard dome on) in the highest brightness bin you can find for sale.
If max intensity (throw) is your desire go with XP-L HI in the highest output bin you can source.
There are other non Cree LED’S that can provide either more lumens or more intensity than the XP-L(HI) but you asked specifically about a couple crees so that’s all I concentrated on here.