Saw something hovering over the cornfield behind my house last night and I can't stop thinking about it

Cornfield hovering object is basically a checklist item for classic cases, you've ticked every box mate. First thing I'd want to know is whether it made any sound at all, because in my EVP work I've had sessions near fields where the recordings picked up a low sub-frequency hum that you genuinely couldn't hear in real time, only caught it on playback. If you've got any kind of audio from last night even just ambient recording on your phone, get it into Audacity and check the low frequency range, below 80hz is where things get interesting. Also what time roughly, and did any animals react? Dogs going quiet is actually more significant than dogs going mental in my experience.

The sound question is massive honestly. No sound = instantly rules out about 90% of conventional explanations, drones included because even those whisper.

@LancashireStoat makes a good point about the checklist thing but OP don't let that put you off, the classic cases are classic BECAUSE so many people keep reporting the exact same details independently of each other. That's kind of the whole point isn't it.

OP - did you notice anything with the actual crops after? Even just flattened patches or unusual smell? Living near Whitby I've had a couple of weird lights over the moors and the one time anything felt genuinely off there was this strange almost electrical smell in the air afterwards. Could be nothing but worth checking the field in daylight if you can get access.

@AbyssalWendigo is right and the sound thing can't be overstated. But OP, equally important - what was the movement like? Hovering objects that then accelerate or change direction instantly are the ones that really eliminate the mundane explanations. Cornfield sightings with that kind of movement pop up in PNW reports fairly regularly and theres a pattern to how witnesses describe the transition from stationary to moving, like it just skips a step in physics. Did it drift at all or was it locked in place?