Bitwarden 4+

No ads and a cheap premium version, plus of course it works, striking a good balance between security and straight up annoying inconvenience. A few minor quibbles but while not as fancy as 1P and not the integration of LP, is my preferred manager over these 2, even when the price issue is removed (and it is heaps less than the overpriced 1P). Found it works far better over multiple devices/platforms than any other PM I have tried.

On my wishlist would be third party templates for non US store cards and ability to scan in card details (may have these, I'm no power user). Not sure if any PM has this anyway. I have not regretted the small Premium user sub yet.

I compared the major options carefully before choosing Bitwarden. Trialled the free version for a couple of weeks, then paid the minimal price for Premium to unlock its full advantages.
Importing from Keychain (in my case) is straightforward, although I perhaps had an advantage that I could script some cleanup routines in the transition rather than tackling duplicates, unused or unsatisfactory passwords in either tool Bitwarden has some tools for it though.
There are disadvantages to crowd-supported tools, like not every personal favourite feature being there today, but Bitwarden deserves its high ratings, is worth the Premium purchase, does its job well on MacOS and iOS.

I've used Bitwarden for a long time to manage passwords and its the best out there. One strange quirk you may run into is that Safari will just not recognise the extension in the browser. I've found the only way to fix this is to download the "Safari Technology Preview". You don't have to use it, but having this installed on your machine will fix this weird quirk. Otherwise, this is the best password manager out there.