Crimson Longinus
Legend
This is my 5e compatible way of minionisation that still satisfies my simulationist needs:Admittedly the bounded accuracy method does the same sort of thing, but I don't think it streamlines the monsters the same way a minion version does, as you still need to ablate the HP and their attacks don't have scaled damage. I would certainly be tempted to house rule that monsters that are X amount of HD weaker than you get killed in one shot and you don't need to roll damage and wouldn't bother rolling for damage on their attacks.
Use only on monsters that have no more than roughly twice the HP characters do on average with their basic attacks (i.e. one cantrip or weapon strike. This is most of the basic foes you would use as a horde.) When they're hit first time, roll damage as normal, if they lose all their HP, they obviously die as normal. If they do not suffer enough damage to die outright, they become wounded. Wounded foes die when they sustain any additional damage (no need to actually roll the damage.)
It's kind of midpoint between full 5e monster rules and 4e minions and it doesn't involve having separate profile for the minion version.