VVD, Diaz, Endo, Mac.
Then you're into the squad players. A little bit mental alright.
Think our first choice midfield would be Jones, Mac and Dom. Not sure we have a first choice attack, but if we did I'd argue it's Salah, Nunez and Jota. You could (and plenty have) made the argument that Gomez should start over Robertson with both fit, but not sure Klopp sees it that way. Really, only VVD and Macca are nailed on starters in our best 11, and possibly Diaz.
That said, that 11 is still a fair bit better than Luton and for a one off game we should be winning. But I don't think there's a single other top squad that could absorb the same level of injuries and put out such a competitive team - it'd be like Arsenal missing Raya, White, Gabriel, Rice, Odegaard, Saka, Jesus and Martinelli. It's mental and it is really not sustainable for longer than a game or two before we'll start struggling.