Yes of course!I have 3 brothers (2 are twins)
And we have "signature" planets and signs in our charts thats also matches my mothers.
My fathers birth time nor even the birt year we don't know but he is Cancer sun atleast that we know.
My mother concieved me and 1,5 years later my brother when Pluto was transiting her 5th house in Scorpio. I'm very plutonic with pluto in scorpio oppo my Sun-mercury. 8th house stellium etc etc.
My brother is Scorpio rising with Pluto in his 1th house.
My twin brothers are Gemini suns oppo sagg Pluto.
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My mother has taurus stellium.
I have sun-merc in taurus.
My siblings, 1 has jupiter in taurus. Two has venus in taurus.
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My mother has sun opposite Neptune.
We 3 siblings have Sun Trine Neptune. And one has Sun Conj Neptune.
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My mother has Mars in trine with Uranus.
We all siblings have Mars-Uranus contact with me having a harsh aspect to it.
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She has Pluto and Uranus in Virgo.
I am Virgo rising. The twins are virgo rising with moon in virgo 12th.
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She has N.node conjunct her Venus, trining Pluto.
I have also Venus conjunct n.node (+jupiter) stellium in 8th house inconj Pluto.
The twins have n.node trining their venus.
So yeah thise are the ones one see upfront, I havn't digged in more deeply ^^