Looking for a gravel frame with long fork length

[kisuke3]

https://escapecollective.com/think-mtb-tyres-are-faster-on-gravel-think-again/

I read this article the other day. Depending on the situation, it says that it is faster to use narrow tires on a suspension fork than fat tires on a rigid fork.

So, I think that in the future, I should buy a frame with a long fork length that is compatible with a suspension fork.
Now, do you know of any gravel frames with such a long fork length?It would be good if it were around 430-440 mm.

Thank you!

[jfcb]

So what is your intention? Swap forks for a different ride? Racing or just riding?
How will you know which set-up is faster?
It might be my personal thought, but I think you're making things more complex for a marginal gain between narrow tired suspension set-up VS wide tire rigid set-up. => choose one.
In any case, have a look at some rigid 29" mtb forks i.e. on aliexpress and put that under the gravel frame if you really want.