It's called Myer Briggs Type
Indicator for a reason, it's only an indicator. If it wasn't that I only quite recently came more in touch with my feelings (also Enneagram 5) I'd probably write myself off as an ISTP, but comparing myself to my best friend who's ISTP and my dad who's most likely ESTP their Fe can trick me, and what really makes me certain that I'm an SFP, not STP is that I have a lot of strong emotions that guides me.
If an outsider were to label me and my friend I'm almost certain that they'd label him as ISFP and me as ISTP as he's very creative, random, imaginative and show a lot of emotional expressions in his face, where as I'd come across as ISTP due to my more introvert, contemplative nature and not giving away as much emotions.
Though for me who know him well, he's so Ti when it comes to things that he likes, such as film editing. His Ti nature of picking apart everything and then adding it together EVEN made him able to use the XP-verison of Windows Moviemaker in such a way that you couldn't even tell that it was made in Moviemaker, which for everyone who's been working with it, is everything but a small feat.
If you take tests like human numerics. It doesn't really pick up on any of the sensing functions, and it favours those with Fe. You COULD be ISFP, because Fi isn't really touchy feely for some people.
Look into the difference between Fi and Ti.
Yes, I wish that I knew this when I took the tests for the first time. I still keep scoring INFP. :tongue: