All the F/m romances I can think of that scratched this "alpha female" list for me (this can't possibly be a complete list but I'm coming up dry past these titles!):
*Alisha Rai's Wrong to Need You's widowed bisexual heroine gets to "use" the hero, who I also love as Introvert Representation (such a rarity in romance!).
*The heroine in Andrea Ander's Under Her Skin gets very bossy, and this both helps her in her recovery from an abusive relationship and is just what she finds hot in its own right.
*The heroine in Laura Kinsale's medieval romance Shadowheart has never taken a BDSM 101 class in her life and that's so, so refreshing. On the flip side, her relationship with the antihero is...I was going to say wildly undernegotiated, but no, they do negotiate. It just gets off to a very bad start (nonconsensual, even!) and they're popcorn-munchingly messed up all the way through. Sometimes I love messed up, but I would be happier if this was one of many titles on my Alpha Female buffet rather than the main course. (The previous Medieval Hearts book, For My Lady's Heart, has a very take-charge heroine but it doesn't quite tip into femdom alpha heroine in my opinion. The deciding factor is that, sure, she tosses a rope over him for Hock-day, but the actual sex scenes start off with him being Explicitly Bad At It. That's good characterization! It does not scratch my itch.)
*For a historical alpha heroine I have fewer qualms about, Taylor Chase's Heart of Deception is a pretty fun Elizabethan espionage romance. (Eh, as soon as I type "fewer qualms" I remember the treatment of the heroine's gay brother and his crossdressing actor boyfriend is uneven. You can do a sympathetic reading but I'm not going to claim it's progressive. But in terms of the heroine's relationship to the hero: she has him undress and stalks around ogling him. It is very gender-inverse bodice ripper!)
*Katharine Buetner's mythology retelling Alcestis has a take-charge Persephone that I liked a lot (and she might be bisexual? Unfortunately this story didn't stick in my head, but one or two scenes...)
To be honest, my taste in F/F is vanilla enough that I don't have a strong list of titles on that front. Then, I'm not sure I'd call a 4.5-title list "strong" for the heterosexuals and bisexuals either, *sad LOL*.
I'm hoping some of this is just the "Ask me to name my favorites and I forget every book I've ever read" phenomenon. Maybe I'll wake in the middle of the night for a few more titles to add. But 1. This is a sadly uncommon character dynamic and even worse, 2. It's impossible to label/never tagged. Personally I'd call it femdom but not everyone does (for various reasons). For the most part it doesn't include bondage, whips, knives, etc, and that's part of what I enjoy about it--I like bondage and toys too! But sometimes I want to enjoy the fantasy of taking a lover apart with my bare hands/teeth/snappy words!