Check John Farnhams Position SUL
 

I have taught and used this position, once the gun is drawn, for 20 yrs....I think the Position SUL is the best for when you are in tight quarters and don't need to muzzle folks around you. It also has decent retention capability.

https://www.usconcealedcarry.com/advanced-handgun/

I use SUL as well.

Personally, I could snap his(picture) arm inward and feed him that pistol in under a second. God bless him if anyone is behind him. I know where I have seen it used, there was no chance of any sort of H2H attack.