Ones I like/love and could feasibly use irl:
SabelaSabine /
Sabina Sabra
SafiaSamraSaoirseSapphiraSaskiaSeijaSeraphineSibyl /
Sibylla/ Sibylline
And the mix of names that I probably couldn't or wouldn't use irl, but I like or think are cool in one way or another:
Saba,
Sabah (one of the nicest people I've ever met was a lady at my old work called
Saba, she was a 10/10 gold-plated diamond and I wish we'd managed to stay in touch)
Sabbath
SableSabrina (just 100% witchy to me, but also kinda sugary. So not entirely my taste. But I'd call a cat
Sabrina in a heartbeak, especially a black one!)
Sadaf (just cool and unusual)
SafiraSafura
SahsaSaira (too close to
Sarah for my personal taste, the meaning is cool though and it's more different (at least in look) than
Sarah)
SamaSamaraSamia /
SamiyaSaorlaithSapphireSatuSébire (weird and cool)
Seferine
Sekhmet (a cool history/mythology name)
SemiramisSenkaSephora (alas, the shop...)
Serenity (cooler than
Serena)
SetarehSéverineShionShulaSiân (I now know a
Siân well enough that it's a no-go for using in real life... she's lovely, but it'd be weird to use it irl)
Sidney (not my normal style at all, but I guess I saw the original Scream at far too young an age and it's always felt fuddy on a dude and more cool on a girl)
Siduri (the second meaning is cool)
Sigourney (I love
Ripley)
SigridSigrunSinikkaSíofraSirkku
SitaraSiyanaSolace
SollemniaSonata
Sonnet
SophonisbaSophroniaSorayaSorcha SuhailaSuzu