Zardnaar
Legend
For the Ranger 5/Rogue x combination:
Two Ranger archetypes jn XGTE offer comparable benefits up to level 5:
Horizon Walker makes all damage from a sneak attack become Force damage, with +1d8. It uses up a Bonus Action (generally bad for Rogues; and needs to be within 30'), but only for the first round the creature is attacked.
Monster Slayer adds +1d6, and also uses up a bonus action for the first round, but does so at a range of 60'.
Both are comparable, and don't require the target already to be injured, which is the case with Hunter (Colossus Slayer).
I prefer horde breaker over colossus slaer. A Ranger/Rogue should probably dual wield.