Aeon Closed X, but you need to wait for the next sale if you want them for $400. Also, why do you need them to have 32Ω?

He could buy them used for only 300$ that seems to be the standard price I keep seeing but their planars so they might need some juice

Fostex thx00 maybe

I have no amp, I'm running them off of a (actually quite decent) laptop audio card. It works on headset rated above above 32ohms but its a bit quiet.

Hifiman HE-R9 (https://store.hifiman.com/index.php/he-r9.html) or you can get the JM Modded one which reins in the treble and makes the soundstage and imaging much better from (https://www.jmaudioeditions.com/product-page/hifiman-he-r9-jm-ocd-extreme-stealth-edition)

and it's a 32 ohm Impedance, 103dB/mW SPL Sensitivity Closed Back. So right up your alley.

Their sensitivity and impedance are quite low indeed. But even if it was too quiet, OP can always get a $10 Apple dongle which is effective at low impedance.

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It's more about sensitivity than impedance. Actually, I would be rather worried about impedance being too low than too high. Most motherboards die at low impedances (below 32Ω). But if that was the case, you can always get a $10 Apple dongle. For high impedances, the headphone would also need to be inefficient which is rare at high impedances. Such examples are DT880/990. But for example, I have no issues driving a 470Ω R70X off my motherboard. Of course, I don't know what is your laptop's motherboard capable of, I'm just trying to help you understand that you don't necessarily need 32Ω. For example, I'm certain you would have no issues driving a 150Ω 660S off any motherboard.