Lots of good recs already on this thread.

I'm a big fan of Blue Sea products for this kind of thing.  They have
a lot of fuse block and distribution options depending on how many
circuits you need and whether you want to branch out GND and + or just
+.

https://www.bluesea.com/products/category/16/Fuse_Blocks

It always seems to be tough to find room for a new fuse block.  I
don't recall ever, ever doing an electrical install where there was
enough space.

I look forward to the day when the wiring on my van is the biggest
problem and tackle this sort of cleanup.  ;)

Alex