Luella

By the way, this spelling variant is much more popular than the original spelling of Louella. So the description should say this: "Variant of Louella. This is currently the more popular spelling of the name."
The name Luella has even made it to the popularity charts of the USA and the UK today, unlike Louella.
https://www.behindthename.com/name/luella/top/united-states?compare=louella&type=sample

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Take a look at the entry for Brayden and Brianna and see:
https://www.behindthename.com/name/brayden
https://www.behindthename.com/name/brianna

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The original spelling of Louella is the name of only 13k girls in the USA in total according to the USA Social Security Administration since 2021.
https://www.names.org/n/louella/about
https://www.nancy.cc/baby-name/louella/
https://names.darkgreener.com/#louella

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The 'variant' Luella is the name of 31k girls in the USA in total according to the USA Social Security Administration since 2021. Much more popular than Louella.
https://www.names.org/n/luella/about
https://www.nancy.cc/baby-name/luella/
https://names.darkgreener.com/#luella

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By the way, the spelling of 'Louella' is more popular in the Philippines than 'Luella'
https://forebears.io/forenames/louella
https://forebears.io/x/forenames/luella

In 2018, 81 is the most common age for an American (U.S.) Luella who is registered female with the Social Security Administration. It is the 1928th most common female first name for living U.S. citizens.

The name Luella was given to 176 girls born in the US in 2015.

The name Luella was given to 107 baby girls born in the US in 2012. It's got the Lu- prefix found in some currently popular names like Lucy and Lucia, and the -Ella suffix found in the über trendy Isabella and Annabella, so it would be a great choice if you want something unique but not totally out there. The only problem is, it sounds a lot like cruella to me.