This is the worst compatibility chart for the Enneagram I have ever seen. I don't know anyone who has ever felt like "Yes, this applies to me exactly."

It also makes no sense. Call this my Ti Hidden Agenda, "to understand", but seriously – why is the best match for an E5 another E5? How many E5-E5 marriages have you known? They are pretty rare. Identity marriages (e.g E5 LII – E5 LII) both in Enneagram and Socionics are not common anyhow.

Furthermore, personally I have clashed with 6w5 several times by now. I would never say they were ideal for me.

Based on my Enneagram studies, observations and interactions with Enneagram types, the one combo that actually relates to real life and "makes sense" the most in this chart is the mentioned E8-E2 one. A lot of E8 guys marry E2 women, I know of several E8 guys who have said they've found E2 women the most attractive (and vice versa), and both types share the growth/disintegration point, which according to several Enneagram authors creates a sense of camaraderie. This makes sense! Haha.

Anyways, I don't want to bash you darya , my frustration is more directed at the chart itself which I have found to be mostly grossly inaccurate. I've expected better from similarminds.
I've noticed you can relate to the E3-E7 pairing. As I have said in my earlier comment, this is possibly not a bad match. However... In light of E3-E7 and E2-E8 being the only "truly" compatible pairings, this chart is lacking in accuracy. And... I want to know their reasoning why they have put certain types together, meh.