Dutch Defense

I think for future tournaments I won't lie we should embrace this opening for it's unnatural sharpness. It would be a fighting opening against the London. But I myself have rarely seen games with the Dutch against the London.does the London have a commanding advantage over the Dutch? I know Jobava london is generally not preferred against the Dutch. But Bf4 London? 

I use it regularly, recently won a daily game against an NM in the daily championship using it lol

What would be a line for a Dutch player to be comfortable against the London?

Depends what line of the dutch do you use? I use various because some lines aren't good against others so...

By line I mean Leningrad,Stonewall,Classical?

Yes Leningrad and Stonewall. I find Classical Dutch is very patient opening to deal with the London.

I don't know if this will help you tbh, but this is a sample game I played against Bf4, it's not completely accurate but should be entertaining enough xD

Your opponent did not play classical theory of the London which is weird. But at least I have how to challenge 4. h4 London.

Yeah my opponent was an NM and that was daily chess lol

How would you face the classical theory of the London then? With the Leningrad setup? What would be your plans knowing the London classical ideas?

Classical line? So I'm assuming you mean set-up's with e3?

Yes

A minature in blitz, wait let me try to find more sample games

Sorry for the gif was too lazy to find another way too share xD

How would you break open the center in this example?

This is what London players usually play

d6 e5 is what you need, in general e5 is unstoppable in these type of positions