My own alternative(AU) version of a Thunderclan big family, focusing on Frostfur, Dustpelt and Brindleface's legacies!
Some more info below
-Haltail/Sparrowpelt x One-Eye/Whiteface(White-eye): happy couple,(changed One-Eye's og warrior name just bcs); they are the parents of Runningwing(wind), Mousefur and Brindleface! Exactly, she is their gray daughter who inherited Halftail's spotted markings
-Robinwing(TC) x Fuzzypelt: They survived together Thunderclan's stavation in GC and since then they become inseparable! But after losing Chestnutkit to greecough(the one that spread in Thunderclan in BP) and later Cherrypaw, they become overprotective over Frostfur; later they had a crisis and Robinwing cheated on Fuzzypelt with Patchpelt and had Longtail; Fuzzy and Robin got back together eventually soon after, but Fuzzypelt died of Greencough before the start of ITW, leaving Dustpelt and Ravenpaw as orphans, while Robinwing died of old age during TNP
-Frosfur x Lionheart: Frostfur fell in love with Lionheart during the pre-ITW greencough epidemic, seeing how strong and loyal he was trying to help Spottedleaf, and then how he helped her while she was grieving Fuzzypelt; they had Thornclaw and Brightheart(Cinderpelt and Brackenfur are Speackletail's kits in my own family tree), but sadly they barely knew Lionheart, as he died when they were kits; Frostfur hated Tigerstar for manipulating her in mistrusting her little brother Ravenpaw, as it also pushed him to leave Thunderclan, but she is happy he found his own path
-Brindlaface x Ashfur(ShC): yes, exactly, she had kits with that guy, who may have died of the Carrionplace disease in Shadowclan during RS(TPB); anyway, she loved all her kits so much, taking care of Cloudkit seemed the only way to fill her void after losing Tulipkit and Elderkit(Elder is a plant, idc to change it), despite Cloudtail didn't saw her a relative(do not push nuclear family relations on this); Ashfur(TC) look a lot like Ashfur(ShC), which confused Shadowclan cats sometimes
-Brightheart x Cloudtail: They only had one kit, Whitewing, I just like the idea of her being an only child; in my rewrite she is very spoiled and mean, especially toward Squirrelflight
-Ashfur(TC) x Whitewing: This is not romantic, the worst and most fucked up relationship you can imagine, is absolutely not an endorsement to ship this; they had a secretive relationship that lasted nothing, but ended in Whitewing's pregnancy; She never revealed who the father was, Ivypool and Dovewing found out later, which fucked them up(in my AU Ashfur's incident was revelead soon after the gathering and Hollyleaf killed him both to protect her family's secret and bcs she was scared of him hurting her loved ones); Whitewing died in Squirrelflight's hope and she bashed Ashfur in Starclan, another motivation of him trying to overthrow Bramblestar and Squirrelflight's leadership, by manipulating Shadowsight in thinking they were to "sinful" to lead Thunderclan(in my AU Bramblestar and Squirrelflight don't get back together and Alderheart and Sparkstorm(pelt) are Cinderheart and Lionblaze's kits)
-Dustpelt x Ferncloud: Still canon kits, but Snowbush, Ambermoon and Dewnose are also theirs; Dewnose dies instead of Snowbush, who in my AU is deaf and, differently from Snowkit, he's better trained by Blossomfall and Brackenfur together
-Spideleg and Daisy(flower/AU) break up and both Fern and Dust scolded harshly Spider for being neglectful toward his own kits;
-Birchfall helped Whitewing with her kits, but he always loved Applefur since he was an apprentice and he joined the Dark Forest only for her and they had Grassheart and Spikefur between TFW and TLH. Sadly Applefur died and the kits were taken care by Snowbird;
-Foxleap x Briarlight: I think they are cute and personality wise they would be unstoppable(in annoying Jayfeather in the medicine den) They don't die and they had kits much later bcs of Briarlight's complications, but idk if their children could be Bristle, Thrift and Flip or Bay and Myrtle.
-Snowbush x Lilyheart: when their kits were born, they were barely warriors, as they started their relationship as apprentices; While Larksong is a sweetheart, Honeyfur is annoyingly sassy(we stand with mean girls!!!) and Leafshade doesn't exist sorry, not when Leafpool is still alive at least(I rememeber thinking Leafshade herself was a premonition for Leafpool's death ages ago for some reason). Larksong dies and Honeyfur, Snowbush and Lilyheart grieve deeply; Honeyfur is Nightsong(heart) actual mentor and she is extremely mean to him, while Lily and Snow absolutely spoil her(yes Night is a transfem bigender she/he, who later become a kittypet);
-Dovewing x Lynx(Tiger)heart: Like canon, but Lynx(I changed the prefix bcs it was still to soon for Tiger and Tawnypelt isn't this stupid)heart is younger so their age gap is less "problematic"(despite the story never intended it as such, but that bcs of the authors' unawareness); Lynxkit, Dawnkit and Flamekit were kits when they went to Thunderclan with their mother Tawnypelt and Whitewing was just pregnant; Lynxheart and Dovewing's relationship was strong and they cultivate it, despite the clans' strict laws and thieir experience is also what influenced Lynxstar to help the exiled ones and fight the imposter in TBC; Dovewing left Thunderclan for two reasons: her treatment at a very young age as the chosen third cat by Jayfeathe and Lionblaze + her broken relationship with Ivypool, which was restored in IG. They had Shadowsight, Pouncestep and Tiger(Light)leap only, in fact Pounce died of Greencough in ASC Sky, pushing Lynxstar AND Dovewing together to occupy Riverclan. After the whole fiasco, Berryheart menaged to overthrown him with the new rule and Cloverfoot become Cloverstar. Even after Splashstar and Berryheart's demise, Lynxheart remained a warrior, blaming himself for everything that happened
-Ivystar(pool) x Dandelion(Fernsong): Dandelion is Floss and Smokey's son and during BS he stayed with Thunderclan, becoming Fernsong. They developed a strong bond and fell in love, but Ivypool couldn't bring herself to start a relationship after all her trauma caused by Hawkfrost, while Fernsong just didn't liked clans' life and preferred to stay a loner with Smoke and his new partner Coriander; They didn't forget each other and remained in good terms, but this means Ivystar didn't had any kits(she become a leader eventually);
-Other couples that I will not explore further: Ravenpaw x Barley(who is really welcomed by Raven's family); Tiger(Light)leap x Blazefire(like canon, they had Quickpaw, Beezhpaw and Poolpaw); Blossomfall x Toadstep(real father of the patrol kits, Thornclaw stays single and dies in TLH), Spikefur x Pinenose, Grassheart x Stonewing, Larksong x Sparkstorm(pelt)