The short answer is yes. Let's examine why for the nerds, lol.

In ESO, when they don't want effects to stack they create it as a named status effect buff, which shows on the character sheet when active. For example, major brutality. If I wear Dreaugh King Slayer I get major brutality 100% of the time. If a second set, potion or ability offers major brutality, it doesn't affect me because each time it procs the system sees I have it and nothing happens. (Technically it's being refreshed in the background, but the 20 second refresh on top of the infinite refresh is inconsequential). The overall point being that when a buff is named and on your character sheet, you may only have one active at a time.

Status effect buffs that affect numeric scales can stack. Your weapon damage can go up and down as buffs and debuffs are applied...as with these sets.

What the system would do while fighting in this gear is calculate a proc chance for every damage hit for veiled inheritance. Each time it procs your damage would go up. Simultaneously it would do the same for ravager for every melee hit...completely independent of veiled. Sometimes neither would be active, sometimes one, and sometimes both.

Testing and verifying this once you eat the gear is slightly annoying, but not the worst. Don the gear and find a mammoth or some skeever. Look at weapon damage on your character sheet. Light attack a bunch, and very quickly flip back to your sheet to note the higher figure. It's going to take some trial and error and you have to move fast because of the timers, but you would eventually see all four expected weapon damage figures.