Looking for recommendations for Feb 2024
You might try asking on Cruise Critic.
You can book a regular cruise or a passage on the Norwegian coastal transport line, operated by Hurtigruten and Havila. These are known for such experiences.
Northern Lights appear in most cases above polar circle (sea mark) and you need clear sky to see them.
Be aware that in Feb you will have only very short daylights.
Youtuber EMMA CRUISES did a northern lights cruise 7 months ago. It has some good info.
If your goal is to see the northern lights, my recommendation is to not book a cruise.
Badger - then what would you recommend and where would you go?
Somewhere on land. Cruises tend to be on water, and all that water tend to mean very humid air, and very humid air tend to mean a lot of clouds. And clouds are in general not what you want of you're looking for the Northern lights. The sea can also be very rough in February, which is something to consider.
On the other hand on land, especially east of the mountain range, there is a much lower risk of clouds and more or less zero risk of sea sickness.
The You tube posters "Let's Go Travel Tips" just did a Northern Lights cruise on Princess and saw the Northern Lights several times on their trip. You could check out their videos for more information.
The Northern Lights are never a "for sure" thing. So much depends on the weather, atmospheric conditions, etc.
We lived in Northern Minnesota for 3 years and I was able to view the Northern Lights several times there. It isn't always necessary to go a long way to see them.
We did a wonderful cruise, “In Search of the Northern Lights”, on Viking in February. The cruise before and after ours saw the lights. Unfortunately, we did not. Bummer. As Carol now retired mentioned, no guarantees.