Looking at it side by side with an actual Strat (Fender), the dimensions, forearm and belly sculpting, top and rear trem cutouts and rear plate where the neck is connected all look the same. And I mean exactly the same shapes and sizes. Even the pickguard has the exact same 11 screw layout, so it appears they would be interchangeable. The one thing I notice that IS different is that the rear of the cutaway is a bit more sculpted to allow for easier access to the higher frets. Which is to say that, besides the sculpted part at the lower horn, the lower (treble) side is a bit thinner than the bass side so there is less material in the way of my hand.
Not sure if this picture totally shows that.
On balance, I would way it is a very slightly modified "Strat" as opposed to a similar design. Obviously different headstock shape and a flatter radius (10-14 compound) fingerboard. Given the solid feel and playability (and without taking it apart) I would venture to say the pieces are built to a more precise fit. Makes me think of the guy that is (or was) building extremely accurate (and very expensive) exacting replicas of vintage Fender Strats and Teles. I am forgetful....His name does not come to mind.....I recall meeting him at a guitar show in LA at least 25 years ago. I was intrigued, but never pulled the trigger. IIRC, his prices started at $5-6k even way back then and he had a long wait list. Way too much when I could pick up a very good Fender Strat with upgraded pickups and "custom shop" parts for $500. Or the SRV Strat or Clapton Strat for $600. And I was not so much into that style in those days......Seems to me he was pretty much a one man shop building one offs around the basic styles.....Suhr is obviously a bigger operator......But offers a good deal of custom tweak options to personalize a guitar, as well as apparently doing"stock" runs. Like the Fender Custom Shop, they come with very detailed spec sheets, re builds.
That is about all I know.
ETA.....My mind cleared. The guy I was trying to recall is Michael DeTemple in SoCal. I was very impressed with his work and attention to detail. Quite the contrast to Leo, who was well known for making guitars quickly and cheaply......IIRC, he laughed out loud when asked about care in matching pickups and the like...."Hell no.....We grab 3 pickups out of a large pickle barrel, slap them in place and send it on down the line.... If it made sound when it was tested, it was good!" Your actual cost to build a Stratocaster back then? "No one ever asked me that before......$38.26!"
This is dated but (if people care) here is a review/interview of what goes into one of DeTemple's builds....AFAIK, he is still in business as a 2 man shop.
https://www.premierguitar.com/review-michael-detemple-spirit-series-guitar