I've seen a few of these and wanted to do my own. In case you've never seen something like it before, this is a Mane 6 shipping chart. Basically I'm just telling you which Mane 6 pairings I enjoy within the actual Mane 6.

Red Line: I don't just casually enjoy this ship. It's one I actively ship. I love it and will eat up any of its related fanart.

Green Line: I like this ship! I can maybe even get behind it, but it's not something I'm actively seeking out.

Blue Line: I think this ship is alright. I don't hold any strong opinions over it.

Yellow Line: I'm not a fan of this ship whatsoever. It just doesn't do it for me.

Disclaimer: No shade to anyone who does like the ships I don't, I don't think "shipping" is a big enough deal where we need to be fighting each other about it or anything. If you like something I don't, I'm not gonna go after you for it. You can ship whatever you want.

Twilight Ships: Out of all of them, my favorite Twilight ship is her with Rarity. I'm a big fan of TwiDash as well, and TwiShy is a guilty pleasure of mine as well.

Rainbow Dash Ships: Out of all of these, my favorite Rainbow Dash ship is actually her with Rarity. That one episode comes to mind where they were in the woods together or something and had to learn to work together despite their differences. I think that's what made me ship it. Anyway, so, for me, I see Dash and Fluttershy as more like sisters, but I know it's a common pairing, and I understand why people interpret their relationship to be romantic.

Applejack Ships: For some reason, I don't find AJ very shippable. I'm a big fan of opposites attract, though, so I do love her with Rarity. I also enjoy her with Fluttershy. I can see her being big n strong, comforting Shy when she needs it, and I like that dynamic a lot.

Rarity: So apparently I find Rarity the most shippable. She has 4 red lines. My favorite of them all is Rarity x Fluttershy. I think they have a lot of chemistry and would work the best together out of any possible M6 ships.

Pinkie Pie: So, I find it a bit hard to ship Pinkie, because to me she reads a bit like a child in terms of maturity. The rest of the M6 feel more "grown up," and while Pinkie is certainly an adult who manages her emotions as such, it just makes me uncomfortable to ship her with anyone besides Cheese.

Fluttershy: Like Rarity, I apparently find Fluttershy very shippable. My favorite is her with Rarity.

I didn't draw wings on Twi, Dash, or Shy for simplicity's sake. Also, I know AppleDash is pretty much confirmed canon, and I'm not trying to claim otherwise. I'm just not a fan of the pairing but obviously hold no ill will towards anyone who is.