OC and Undervolt RX Cards

I have the following cards:

Vega 56
Vega 64
5700xt
5600xt
6600
580
3060 TI LHR

I need them OC and undervolted for maximum benefits for Ergo. I'd like to maximize efficiency of Hashrate/Watt.

The rig is on Hiveos

Projected estimates for each card as far as hashrate

Vega 56 170mh
Vega 64 150-190mh
5600Xt 80mh
5700Xt 100mh
6600Xt 60-100mh
570 60mh

Most important is to maximize the hash/watt for efficiency.
3060 TI LHR 165mh