I tried amethyst, nostrudel, snort, and coracle.
In coracle it worked, but I already added a name, so profile was created.
Depends on the client. I just spun up this npub, without creating a profile, and I can follow it without issue on Coracle: nostr:npub1h0v63p0zh25f3mpkq7hk3zaas595utvmm88y5cz36fxgmj8wsn7sm2d3kp
Discussion
I just looked that brand new npub I created up on all of those clients, and I have the option to follow it, even though it has no kind 0 event anywhere.
Amethyst:
Nostrudel:
Snort/Phoenix:
Coracle:
Kind 0 unable to be found via Luminostr, since I never created one:
Interesting. Thanks for the heads up!