I actually do not, which is a really disappointing answer, I know! So this is mostly about how I name characters rather than in-universe stuff, which is probably not what you were hoping for.
Alecto Syndulla was actually a really unusual for me — with her, I knew I wanted to go for a name from Greek or Roman mythology to go with Hera’s name, I wanted to make sure it didn’t have too many weird overtones because of that context, and I wanted it to sound right with the Syndulla surname. (For example, I was originally going to go with “Metis” (Athena’s mother), but “Metis Syndulla” doesn’t sound great because the “s” sound at the end of the first name and the beginning of the surname blur together.) And then because Hera was already named, I didn’t want anything that would be too weird about her mother’s name, so while I initially looked at other epithets for both Juno and Hera, I didn’t want Hera’s mother to come off as just another aspect of Hera; I also didn’t want to name her after one of Hera’s (the goddess’s) children, which put Enyo out, which was my second choice. (I also briefly considered Rhea, but was like, nah, that’s too obvious and doesn’t have the right symbolism.) I knew I wanted something a little warlike because I headcanon that Cham’s wife was a freedom fighter alongside him during the Separatist occupation (probably this gal), so I was looking for something that was slightly disconnected from the main family tree of the Greek and Roman gods. I also needed something that would sound at least as Twi’lek as Greco-Roman (at one point I glanced through the known Etruscan names, because I was thinking of doing something off Athena/Minerva, but then I thought that might be strange for a mother character). The mythological Alecto is one of the Furies/Erinyes, and the mythological stuff going on there works for Cham Syndulla’s wife and Hera’s mother.
HOWEVER THAT SAID, this is more thought than I have probably ever put into naming another original character, ever. This may be the one and only time I was actually paying serious attention to what the name might mean, and that was only because of Hera. (And I know that in the EU there are some very specific Twi’lek naming conventions, but I looked at that and then went, “Nope.”)
Normally, what I do is that I keep an ongoing list of interesting first and last (and sometimes place) names that I see in TV and movie credits, sometimes in books, and when I need to name a character or a place, I look at that list and try it out to see how it sounds, if it sounds okay for that culture or species. For the Naboo, for example, I tend to shy away from much harsher consonants, but use shorter first names, with a lot of “-é” endings for the women — Kovaré, Lydeé, Yfandé, Yuilé — or “-i” sounds that mimic that ending, like Jahsvi. (Like all Anglo-American women do not have names that end in “-a”, not all Naboo women have “-é” endings, though it’s fairly common.) In a couple cases where I have Naboo characters who aren’t human, I was trying for names that both sound Naboo and sound “other” enough for it to work, like Kovaré Auza (who’s a Zeltron, and has a little bit of that harsher sound with the “k” and “v” but still has that “-é” ending) or Khoranzim Maiki (who’s a Mirialan, whose surname is Asian-sounding enough to mimic the Naboo “Panaka” — there are a couple other Naboo OCs who have Japanese-sounding surnames — but who has a first name that sounds distinctly un-Naboo). Though to be fair, I think my Naboo names, especially my Naboo male names, actually do not sound anything like the canonical ones, where we have names like Sio Bibble and, of course, Sheev Palpatine.
When kablob17 and I were naming Edrin Tazani, our Mirialan Jedi OC, it was mostly a case of me looking at my list and trying to figure out what sounded Mirialan based off the two examples we have, neither of whom are male, and then throwing them together trying to find something that sounded “Star Wars” and Mirialan and which both of us liked. It ended up having an “-i” ending (mimicking the “-” and “-ee” sounds of Luminara’s and Barriss’s surnames), but that was mostly a happy accident.
When I was naming the Rohane in Bottom of the River, I was using hyphenated names since it was for Obi-Wan’s family, but again, this was just another case of looking at my naming list and either breaking names up into hyphenated forms or sticking random syllables together to see how they sounded. River’s actually kind of an interesting case because there’s a scene with a Rohane character, two Chandrilan characters, and a Helane character, and I wanted all of them to have distinct names to show that while they might all be human, they don’t share a background or a culture. So: Ina-Rati Kenobi (Rohane), Teg Karass and Ras Ulina (Chandrilan), and Corrian Rilis (Helane). Ina-Rati’s got that hyphenated name, while the Chandrilans mimic Mon Mothma’s name by having a single-syllable first name and a two or three syllable surname, and Corrian doesn’t match with any of the others.
If I’m trying to name a character to match with their species or planet of origin, I’ll usually look at the canonical examples we get for them, cross my fingers that they’re consistent, and then go down my list and put combinations together until something sounds right. So we end up with OCs like Taris-Keir-Peli (this was before I knew there was a planet called Taris, or I wouldn’t have used that), who’s a Cerean like Ki-Adi-Mundi, or Twi’leks like Rejiaan Dare like Griaa Tudela; at the time when I was writing most of the Twi’lek female characters I knew of had that double “aa” in their names, and it’s a fast shorthand for saying “this is a Twi’lek” without necessarily having to spell it out in the text.
When I’m naming clones, I try and go for shorter syllables, usually nouns — Coil, Tango, Tare, Thorn, Ritz, Floret. I have a tendency to shy away from using actual names, though the show does that; it’s just usually easier for me to think of a random noun off the top of my head than it is to think of a name that’s not being used elsewhere or which doesn’t sound quote-unquote “Star Wars” enough.
*frown* Aside from the Naboo, the Rohane, and some one-offs, I don’t actually have that many OCs in Star Wars, since most of the time I can just dust off an EU character instead of coming up with a new one. The bulk of my OCs are from Narnia, where I was making a point of having species- and race-specific names since that was a major plot point in my story Dust in the Air. But that’s another fandom.