I'm similarly a fast loser, I'd be interested in the progress of someone similar to me.
Back in 2017 I lost 8 stone in 9 months, with the first 7st of those at a rate of 1 stone per month. Maintained to lockdown, took me from 2020 to 2022 to put 7 of those 8 stone back on.
This time around, I started at 17st11 on 22nd July and am now 13st 5 - about 4 1/2 stone in 5 months. I find losing weight easy, by biggest challenge is yet to come - maintaining.
I have something of an 'All-or-Nothing' mentality. Since end of July I have eaten no sugar, no carbs, low fat, low calories. Essentially I eat low carb vegetables and lean meat, one meal a day with two fast days most weeks. I don't feel deprived or concerned by my diet, I'm fine with it. My issue is that I either eat like My Body Is A Temple and exceptionally healthy, or I decide I'm not eating like that and eat literally anything and everything. And I am as equally unconcerned and fine with my diet when eating crap.
I struggle with the finding a middle ground that I can psychologically maintain long term.
I often face judgement if I describe my diet to others.
What's new this time, that I've not tried before (aside from WLI) is my use of fast days. I like the idea of feast and fast, it might suit me. I'm considering water fast days as part of a maintenance plan.