They're all too late.
I held on as long as I could for a decent phone that had everything I want (which would include 5G purely because I use it as my main Internet connection), but I gave up.
Earlier this year, I bought a Samsung XCover Pro. Removable battery. Headphone port. MicroSD expansion. Waterproof. Latest Android. Dual-SIM. A camera (I don't care beyond that, but apparently it's got a few fairly-snazzy ones). Not stupendously large. A single button shortcut for putting the torch on. All the usual things you'd expect. Fast charge, USB-C, including host (I've already used it to run an inspection camera on a long fibre optic, plus an RTL-SDR to pick up air-traffic and radio, not to mention being able to just plug in a keyboard and mouse in a pinch). And the GPS is amazing - GPS, Galileo, GLONASS and Beidou. It fixes in seconds and it's accurate to 2m even indoors! And 4G.
(I mean it lacks the IR blaster port my old phone had, and it has the stupid front-facing-camera-inside-a-notch junk, and the microSD and SIM are still underneath the damn battery, but it's all a really good compromise for my purposes).
They took too long and my old S5 Mini was dying, and I clung on for 5G as much as I could - and still there just aren't enough phones/packages/coverage to justify it. I'll have to just suffer the 80Mbps that my phone gives (far better than the 4Mbps I was offered as a landline! I told BT where to stick that landline) on 4G.
I don't think I was unreasonable in wanting a removable battery. The headphone port is a nice bonus (and may well form the basis of an IR blaster if I can find the right hardware, but a cheap one off Amazon didn't work). And it outperformed whatever that recent iPhone thing was in almost everything (okay, it doesn't have a 4K display but... I want a small display anyway, resolution at that size barely matters!).
Was debating between the Pro and the Field Pro but couldn't find much of a difference and the thing feels pretty solid. I don't use cases and screen protectors and nonsense - I expect the manufacturer to provide sufficient protection!
But it would have been really nice if they'd put 5G in it... it would have neared perfection even if I couldn't actually use it yet. But, to be honest, based on the phones I'm seeing with 5G, I honestly think I'd rather carry a 5G wifi box (the 4G ones are tiny nowadays, I'm hoping the 5G will be the same, and they can charge from the host USB-C port in a pinch) and the XCover separately if I ever feel desperately left out.