I'm no expert. Here's what I know/think/guess:
Tesla offers V2L on some new Model Ys (Performance only?) with its mobile chargers now, but only to 110 volts IIRC.
Gravity with the Power or Technology package has three 15amp, 110 volt outlets in the vehicle. IIRC, you can pull 1800 watts from each simultaneously.
The Ford V2H does output 220 volts. Here's State Of Charge's video on it:
• Three components: Inverter, Transfer Switch, and a "Dark Start" Battery, plus the special Ford Charger
• It's complicated, here's the flow:
• The Ford setup with the F-150 is limited to 9kW of power
• The add-on cost is (was because no F-150s anymore?) about $5k add-on cost, including the charger
• Installation could be another $3.5k-$4k (or more), depending on your home's electrical configuration and distances involved.
• Lucid's RangeXCharge adapter can charge other EVs at 9kW, too
If I was trying to do something on the cheap, the F-150's 220 volt outlet would look more appealing to me. Tom installed it because for him it's a tax deduction for his YouTube business.