Kardiatype: A past life which experiences had such an impact on you that it formed your core identiy and personality even to this day in such a way that it differs from your past life identity/personality therefor making you NOT identifying as the being from your past life anymore.
My core identity is spiritual in nature. What I identify as today is based on past life experiences, but I still identify as those creatures today; they frame how I see myself and my actions. A kardiatype, even though it is also a spiritual identity, feels different.
My kardiatypes feel different from my kintypes in that the former is complete. I left that behind, it's done, finished, over, and in my cases, I succeeded at whatever I was doing. Nothing carried over into me today except the memories and emotions that I had experienced then. While, yes, that's very important to me still, it's no longer me. As a goddess, I carried everything that made me, me, on into me today. As an Indoraptor, it somehow still carried on into me today. It feels unfinished, with no closure.
One of my kardiatypes is a Survivor from ARK: Survival Evolved, a survival crafting game. It's easy enough for one to say "you're hyperfixating on a video game, you're just identifying that way because of your obsession." Recently, my computer capable of playing the game crashed. I hadn't been able to play the game for about a month, and the break from it had been good on analyzing my kardiatype, as I was forced to disengage with the media.
Before my computer crashed, I had begun analyzing whether it was a kintype due to several similarities, habits, and instincts that I had noticed and begun to attribute to my kardiatype. But the several degrees of separation from the game allowed me to really sit and consider and accept the lack of feeling like being an Awakened Managarmr. I came to understand that the continued biases and opinions from that life bleeding over into this one, doesn't have to mean that I still identify as the kinsidered thing. But it also made me realize that I still had those thoughts, biases, opinions, and instincts, and they formed a part of my identity even into today.
This understanding helped me also finally and firmly label my faehunter 'type as a kardiatype. For a long time, I'd been trying to analyze that as well, but the overwhelming biased instincts from that 'type had made it really difficult to relegate to "just an important past life", regardless of how little I actually identified as a fae hunting creature in this life. Figuring out my Survivor kardiatype makes that so much easier to accept.