What are the best openings for black against d4?

What are the best openings for black against d4 as an intermediate player?

I like the KID.

1 d4 d5

:/ not exactly a specific opening

@4

Well then 1 d4 d5 2 c4 e6
See Figure 30. https://arxiv.org/pdf/2111.09259.pdf 

The Orthodox formation is certainly worth learning, since you can use it against several different White systems (Queen's Gambit, Catalan, Reti/Barcza System, Bird's Opening, etc).

slav defense

French Defense

very solid queen gambit declined

The Italian Game in great

KID is the best

He is 700ish at 5 minutes. Most of his opponents will have issues with the Kid.

I play d5 because I am a d4 player.

If you do play d5, then you need different options for Queen's Gambit and London.

KID is pretty universal.