Do you need a rack or just one good hook? That's the question, and most entryways answer it themselves. If keys and a couple of jackets are landing on a chair, you need one sturdy hook by the door, not a six prong rack that looks like it's expecting a crowd that never comes.
If you've got nothing up yet, start with a single hook mounted at the height your hand actually swings to when you walk in, not wherever looks nice on the wall. A double hook comes next, one for keys, one for the dog leash or the tote bag you always forget, and that covers most households without turning the entry into a mudroom display. Only go bigger than that once you know you need it, because an empty hook rack is worse than no rack at all, it just sits there asking why nobody uses it.
On finish, matte black and brushed brass are the ones I'd trust in almost any entry, they don't fight with the door hardware or the light fixture the way shiny chrome sometimes does against warm wood tones. Satin nickel is the safe, slightly boring choice, and there's nothing wrong with boring by a front door, it's not the piece doing the talking. I had a set of hooks in a glossy finish once that looked sharp in the box and then spent two years showing every fingerprint from every kid who touched them on the way out the door. Matte won that argument for good.
For sizing, measure the width of what you're actually hanging, not the wall space you have spare. Keys and a light bag need maybe four inches of clearance between hooks so nothing tangles, coats and bulkier bags want closer to six. Mount the main hook between fifty four and sixty inches from the floor for an adult household, lower if kids are using it too, and leave room below for boots or a bench if that's where this is going. The mistake I see most is putting hooks too close to the door frame, so the swing of the door catches whatever's hanging and knocks it straight onto the floor, set them back a few inches and save yourself the daily irritation.
The detail that makes a good hook worth having is the curve at the tip, deep enough that keys and a loaded bag stay put through a slammed door and a dog barreling past, instead of sliding off every single time someone's in a hurry.