We have the same problem mate, small wrist gang.
1. BlackBay 41 , they got the 36mm or 41 mm. Simple and good looking watch. Used market around 8k.
2. Oris diver 65 at 41mm , short lug to lug, have that vintage vibe and the best part is, you can get it under 5k. Bang per buck.
3. The iconic Speedmaster reduce at 39mm, nothing say about it, cuz it's speedy. Used market under 8k.
4. Sinn 104. The German Pilot watch at 41mm , very rebust watch. Brand new slightly under 6k.
5. Another Oris, big crown day date pointer at 40mm. The last independent watch brand. The day date is a very use fully featured and it is cool looking watch, especially the green dial and bronze case. Brand new you can grab it under 8k.
This is the only top 5 I can think off right know. There is hell a lot more, you can grab under 10k with a small case size.
Cheers mate.