Same door style, "breaking it up" will make it look like you shopped at a discount or closeout rack.

@millworkman this is why I ask! Thank you

Two mirrored bifold doors from Home Depot!

bifold is a nice idea.

have all the doors match. That main bathroom door, I'd think about replacing to whatever you use on the bifold. something like these. One or the other, not both. have the bathrrom door match whatever panel you choose

BTW, what is happening w/that baseboard piece where the red arrow is? why is it turned sideways?

have you thought about replacing all of that door casing to something wider and smooth? (the baseboard too. try the 5 1/4" simple baseboard) like these pics show

Here's another one w/nice trim, simple bifold. you can find this and plenty of other options on wayfair

https://www.wayfair.com/Trimlite--Primed-2-Panel-Ovolo-BiFold-Door-68138pri8082BF-L6477-K~TRML1014.html

you can get similar pine bi folds at lowes or HD, and paint them any color.

exactly what I did w/these for my laudry closet. painted them and added hardware. also notice the casing.

don't know what your color choices are, but painting the doors something diff could add some interest

@Beth H thank you! Arrow trim is just sitting there unattached right now.

Thank you for the suggestions. Definitely not opposed to swapping out the ugly bathroom door, it was original. If I did that though, would I then need to switch out my bedroom door (on right in my second photo) and then also all the other doors on my upper floor?

I would. you might as well have everything match. I don't like those generic (cheap) 6 panels.

try and go for the single, double or triple.

You don't have to drop a lot of money. you can find slab doors for next to nothing if you can DIY the rest.

or, just do a single or double panel for all of the doors. home depot has these pre-hung

If you swap out the bedroom doors too, buy solid (rather than hollow core) doors which reduce sound transmission. I was amazed how much noise is cut down which results in better sleeping.

I would have left the bathoroom do the same as the rest no indent and then if the hooks were a must they could be in the indent hall , all the doors the same only oyu need to know which one is the bathroom. Then all same really simple style door not too much trim or too many panels .

All 3 the same style and consider style’s functionality: proximity of the closet door next to bedroom door and ease of access into bathroom - remove inner door and go flush along that wall, which will also be more visually more appealing.

The bedroom door does not have to match; it‘s more important that it matches the doors of the connecting rooms. Before going that route, add up your number of doors/cost (whole house should be done), plus potential new hardware.

So much better said than mine but the same idea.

Your original doors might not be cheap. They might be the nice ones the cheap doors are emulating.

i'd switch all the hooks to the inside of the bathroom door -- right now they're going to bang into the hall wall, or keep you from opening it if there's a lot hanging there. Plus, if they're for towels and the like, surely you want them on the bathroom side?