I'd really like to be able to say, "Honey, I'm baaaack!", but unfortunately, this is going to be more like an unannounced visit from that crazy Uncle Bob on your Dad's side that your Mom can't stand.
My first and one true love is my Templars. I started them back a few years ago and fully immersed myself in their lore, when we still had the 4th Edition codex going for us, even as we were in the latter stages of 5th edition and jumping into 6th was not yet on the horizon.
Prior to that, I had started a DIY Chapter of my own design whose lore, which quite unknowingly on my part, was very similar to Templars in a lot of ways.