@InfoSecInTheCity you and I are similar in many ways - your water comment just jumped right out at me, because I am exactly the same. 2 ltrs plus or I don't lose an ounce regardless of anything else I do.
I started at 225lbs, I'm currently at 146.6. I'm shorter than you, I think, from previous posts because I'm only 5ft, so I lost the first 20 or so lbs extremely quickly and then it's been a pretty consistent line.
My original 'ambitious, never gonna happen target' was 145, and I'm a hair away from that. I've reset that now to 135, and we'll see.
To be at an 'ideal' weight for my height, I actually need to be around 110-115, but that seems (still) completely unlikely. I don't think I'd look healthy - I wasn't that light at 16 and I was a size four dancer back then.
But, like you, I eat very similar things on repeat, varying rarely and almost never going over my count, I log religiously, I have a woosh week every month with my period, and a stall in the week before, and, yes, the water thing is real....