My understanding of the sp7 is that they can be rather 8-like. As sp-doms but also 7s and especially as an ENTP, you might get something that doesn't look like your typical sp-dom, such as, say, an sp3, but it's still in that ballpark where you want to accumulate things, are likely to have collections, could possibly have a history of health anxiety/hypochondria (as I do), and calculate things a bit more before taking risks. I also read that sp7's will really defend their lifestyle. Previously, I wasn't too sure what this meant, I figured out would have to be like a typical sp-dom lifestyle of gym, 9 to 5 or business, etcetera. But then I realized, I actually defend my lifestyle as well and can get really rebellious if I have to change something about it, especially in terms of freedom. In the past I've really struggled to adapt my sleeping schedule around things like my studies, so instead I attempted to mould my studies around my schedule instead of the other way around. I've also always been a big collector of things, have a network of close and trusted friends (and have been critical of people whose influence I've thought of as not conducive to me or who I think put me in an unfair position in relation to them) and really make sure I can have my morning and evening showers for refreshment. Before, when I mistyped as an ENFP for a little while, I thought of myself as more of an sx-dom and possibly sp-last, since I've always struggled in terms of figuring out what to do career-wise and avoided jobs and commitments that would impose unwanted influences or schedule changes or such upon my sense of freedom. But this could very much just be attributable to being an ENTP, a 7 and, in combination, an sp-dom. I have worked to adhere to certain values to a certain degree, such as kindness (Fe) and so on, although a good part of that was influenced by kind-hearted close friends, I would say. As a kid I was a troublemaker and pretty violent in retaliatory ways, then after some traumatic events I became more withdrawn, temporarily, before peeling back those layers again.

The reason I think I'm sx-second is because I'm also very much focused on my intimates, on finding relationships, intimacy, and so on, as well as my passions and the things that bring about a spark, a fire of intensity. This in combination with being an Fe-user would explain why I also know my social graces well enough (with the sp7 being actually more people and network-oriented than many other sp-doms), but still always seem to struggle to care that much about having a group I belong to (and when I do try to get that, I often find myself changing my mind quickly about it, or leaving it in the dust in favour of other pursuits). I do have a history of social anxiety, which I've worked to gradually overcome over the years, but I also have OCD, so I don't know where the two intersect. I'm not sure I agree with the sometimes given notion that so-last necessarily has to mean that you don't care what others think, I've also read that so-last can actually bring about social unease in ways, and it could be in relation to being an extrovert and an Fe-user, but that's just my theory. As far as I'm aware, my tritype is 738 or 783. And also as far as I'm aware, ENTPs are either sp7 or so7, and sx7 would be ENFP domain, but I'm thinking if maybe sx/sp is a possibility for ENTPs due to the stabilizing presence of sp-second. I'm curious to hear some thoughts on this, but I think I've got it pretty much right so far.