I can vouch for iwantmyname. Great customer support that went above and beyond what they had to. They even worked with Protonmail to get my custom domain functioning.
Got it! Thanks guys - Iwantmyname actually reached out to me but I wasn't sure how legit they were since I've never used their product, but after you guys' testimonials, I think I'll add them to the next version of One Word Domains! :D