Hello and welcome! There are two layouts that I think would fit your description; 64-key and 68-key.
64 is like a regular 60% alphanumeric cluster, but with arrow keys wedged in the corner, displacing or shrinking some other keys to make room. 68 is one of the standard 65% layouts, like the bakeneko65, except instead of two keys and a blocker between the arrows and space bar, it’s three single-unit keys.
Probably the easiest to find example of the 68-key layout that’s also available in white is the Tofu65 by KBDfans:
You can buy these as kits or pre-assembled and get a complete board within your budget.
There’s also a new version called the TofuJr that has a more modern mounting style, but I think they’re sold out of the white ones at the moment.
The 64-key layout can be found on a few random prebuilt keyboards and pcbs, the latter of which should all fit in “standard” gh60 mount 60% cases; many of which can be found in white. This is what that layout looks like:
