Openings for Black against 1. d4

Hey all,
I've been playing a little more seriously recently and I'd like to solidify some opening prep as black against d4. There have probably been a decent number of forums based on this topic, but openings change for people and I was hoping to get some suggestions. I've played the KID (which was way too complex, nobody should play it if they aren't 2300+), and the Triangle Slav. At this point, I'm willing to try anything that's not too theoretically complicated (maybe something a little offbeat?). Thanks in advance!

Nimzo
Indian

Here are two solid but dynamic approaches:
(1) 1.d4 Nf6 2.c4 e6: (a) 3.Nc3 Bb4 (Nimzo-Indian); (b) 3.Nf3 b6 (Queen's Indian) or 3...Bb4 (Bogo-Indian); (c) 3.g3 Bb4 (Bogo-Indian, avoiding the Catalan, 3...d5)
(2) 1.d4 Nf6 2.c4 e6, then 3...d5 with the QGD Tartakower as your main line.
If you eventually learn both (1) and (2), then you have a lifetime of dependable openings, with the ability to transpose to either an Indian or QGD approach, depending on circumstances or mood.

The slav is going to be really good against those d4 players. It keeps it nice and slow just like they want it. You have a nice solid triangle to

The jobava london traps are worthless against it also.

Chebanenko Slav

against queen's gambit, slav is good, maybe try the albin counter gambit if you are feeling spicy

against the london, just chuck your c5 pawn at them

idk about anything else really

just risighn nothing to do