All my dolls ended up in the same resin tone!

I highly prefer all my dolls being the same resin tone. Having one set of hands for multiple dolls is a huge draw. If every one of them could be Volks WS or NS, I would be so happy. I have 3 dolls in Volks WS, but they don't all match because of aging.
As for looking similar, my two Migidoll boys in different resin tones are the ones mistaken for each other. Resin tone doesn't seem to make a difference there.

 

There are tutorials on dying dolls here on DoA and more likely YouTube as well. Lomi’s Playground has a video where she dyes a doll and one where she uses paint! Just mentioning it so if you ever want a doll a specific color and can’t get it in that color there are other options.

https://youtube.com/@lomisplayground?si=8U-gw2if6D2J76s0

 

I have two dolls from Loongsoul in the same resin tone (light rose). After I ordered the second one, while I was waiting for him to be delivered, I got very worried they'd look too much alike, which would make buying them both foolish, and what if I didn't like him as much in person because he was the same....

...buuuut they look entirely different from each other, even with the same resin tone and company faceups! I took some comparison shots of the two of them together when Goumang, the second fellow, first arrived. I balded them both so you could see their facial features better. Here they are, Alkaid on the left, Goumang on the right:





As you can see, their facial sculpting is quite distinct! My worries they'd look too much like each other were completely unfounded, lol. (My worries I wouldn't like Goumang were also unfounded-- don't tell my other dolls but I think he's my favourite...)

Honestly, even the same sculpt in the same (or similar) skintone can look very different with different faceups. Compare my Youzen to bickazer's Aramy, or Humi's Ens. Wigs, clothing, and accessories also help to distinguish dolls from each other. I think you're having some very understandable new dolly parent anxiety, but I wouldn't worry too much about your girls looking too much alike. Once they're in your hands, you'll be able to make them as distinct and unique as you want!

 

It takes a lot more than just the resin tone to mistake dolls for siblings/twins, I don't think I've ever looked at a photo of two dolls and even noticed if they had the same skin tone. There's plenty of variety in other things! It's absolutely a good perk to get to swap parts between dolls, though.

If it really bothers you (I understand, we can all get nitpicky about our dolls), dyeing was mentioned above, but you could also blush your dolls differently, or even use fantasy colours for that to give them all a different flair. Customisation always helps

 

Yep, I have two dolls in from Luts in Light Tan, and even my dolls from other companies are in a very similar shade of tan. It wasn't planned, it kind of just... happened. But even though they have similar skin tones, difference in height, sculpt, faceup, and clothing makes them unique.

If (when) I order from Luts again, I'm going to pick their deepest tan!

 

I agree with cobaltconduct that styling makes the most difference and skin tone is not that relevant if you're worried about making your dolls look unique.
The most fantastical fantasy dolls I've seen were regular human sculpts in human skin tones, only styled really well to look fantasy. Inversely I've seen fantasy sculpts in a fantasy skin tone who felt ordinary, because the styling itself made them ordinary.
And to make dolls look like twins you have to actively work on it! I have identical twins down to the makeup, and I want them to be twins, but with different clothes, wigs and some posing to give them a different body language they still feel like distinct characters.

 

Honestly? While I have dolls in several different resin tones, they're also different sizes. Styling and faceups are the key to making your dolls look unique, regardless of resin tone.