Here is my feedback for what it is worth:
Start with either an entry level DSLR, or go full in with a high end model. The middle ground really doesn't buy you massive gains IMO. With the entry level, you'll still learn all of the basics of photography, the camera will not hold you back for quite a while. If you enjoy photography, you can upgrade to a high-end camera later without much regret cost of the middle of the pack camera. On the other end, if you don't end up taking a liking to it, you're not out as much. The 5000 series over the 3000 series doesn't really gain much in photo value, but does have a few nice features like the articulating screen, bracketing function, and timelapse. Up to you if these are worth the extra money. The sensor, frame right, etc. is all the same.
On the bright-side, camera gear holds its value rather well, especially compared to sleds.
I started with a Nikon D3300 (new equivalent models are D3400/D3500) with 2 kits lens both a 18-55mm and 55-200mm. This combo worked great for a couple of years. Last year I upgraded to the Nikon D850, mostly to take advantage of the much more usable upper ISO range to ensure I could get properly exposed very high shutter speeds for actions sports, as well as greatly improved auto-focus system and resolution. You'll find that the "kit" lenses have relatively small apertures which limit how much light can enter the lens, and there limits you're shutter speed requiring you to either crank up the ISO or slow down the shutter. The high iso setting will result in a grainier/more pixelated image on entry camera. Where slowing down the shutter speed may result in motion blurred images. In bright blue bird days, this won't be an issue. Shooting lower light conditions can be a different story.
I'm making an assumption that you probably don't want to go drop 3k+ plus on a first setup. For that reason, I'd recommend the entry level Nikon (or any brand for that matter, personal preference) and save a little extra to put towards a better lens than the kit lens if you like shooting. The lens will yield better benefit over upgrading from entry range, to a step up or 2 in camera body.
Happy to answer any other questions you might have, shoot me a message, or on here either way, I'll share what knowledge I've gained shooting the last few seasons.
-Corey
@coldfront_photography