The 18 Hmong clans/surnames (xeem) most common in Laos, northern Thailand, and most diaspora communities are listed below with variations (different varieties of Hmong, different spellings). Each clan has two names in each language: one originating from Han Chinese (xeem) and one or more older Hmong forms (qhua). Some of the information linking xeem to qhua has been lost in the depths of unwritten history so the mapping between them is not precise and my list may have some errors. (For Hmong people, given the importance of clan affiliation in relationships, this is important: my list may indicate the wrong clan affiliation in some cases, and I don't know if it is correct that the qhua PLUAS has three different xeem. Kuv sim ntau, tab sis tej zaum kuv ua yuam kev. Kuv thov zam txim.)
Generally Hmong communities in Laos, Thailand and the U.S. prefer to use xeem (I think this is also true in Vietnam) and most Hmong communities in China prefer to use qhua.
Occasionally in English (and often in Thai) a xeem name will be prefixed with Sae-/แซ่- (such as Saelee, Saethao, Saevang, Saelor; แซ่ลี, แซ่ท่อ, แซ่ท่อ, แซ่ท่อ), which indicates that the name is the xeem-form or 姓, but in English this prefix is more common among Iu-Mienh communities and less often used as a part of Hmong surnames.
xeem TSAAB (CHANG), qhua NRIG (NDEE)Pahawh:

Hmong Daw: Tsab
Hmong Njua: Tsaab
Hmong Daw/Njua (Qhua): Nrig, Nyab
Hmong Dou: Zhangb
Hmong Dou (Qhua): Niangb
Hmong Bai (Qhua): Nyangb, Ndris
Dongcun Miao (Qhua): Nyangb
Large Flowery Miao (Qhua): Ndlrwl, Ndlwl
Small Flowery Miao (Qhua): Ke-Ndrik
Vietnam: Chá, Chang, Trang, Tráng
Latin: Cha, Chang, Saechang
Chinese: 張, 张, 康
Thai: ช้าง, แซ่จาง, จาง, ชะอำ
Lao: ຊ້າງ, ຊິງຊ້າງ
xeem TSWB (CHUE), qhua PLUAS (PLOUA)Pahawh:

Hmong Daw/Njua: Tswb
Hmong Daw/Njua (Qhua): Pluas, Plua
Hmong Dou: Zhub
Hmong Bai/Shi (Qhua): Bluat
Large Flowery Miao (Qhua): Dlrat, Dlat
Vietnam: Chớ, Châu, Chảo
Latin: Chue, Chu, Chou, Cho, Zhu, Saechue
Chinese: 楚, 儲, 储, 褚, 觸, 触, 朱
Thai: จื้อ, แซ่จื้อ
Lao: ?
xeem TSHEEJ (CHENG), qhua LOOG (LONG)Pahawh:

Hmong Daw/Njua: Tsheej
Hmong Daw/Njua (Qhua): Loog, Xyeem
Hmong Dou: Chenx
Hmong Bai/Shi (Qhua): Longs
Large Flowery Miao (Qhua): Rangf
Vietnam: Sình
Latin: Cheng, Saecheng
Chinese: 陳, 龙
Thai: เฉิง, เฉ้ง, แซ่เฉ้ง
Lao: ຊິງ, ແຊ່ຊິງ
xeem FAAJ (FANG), qhua VUG (VUE)Pahawh:

Hmong Daw: Faj
Hmong Njua: Faaj
Hmong Daw/Njua (Qhua): Vug
Hmong Dou: Fangx, Huangx
Hmong Bai (Qhua): Vos
Vietnam: Phàng, Hoàng
Latin: Fang, Fau, Fa, Saefang
Chinese: 黃
Thai: ฝาง, ฟ้า, แซ่จื้อ
Lao: ?
xeem HAAM (HANG), qhua TAAG (TANG)Pahawh:

Hmong Daw: Ham
Hmong Njua: Haam
Hmong Daw (Qhua): Tag
Hmong Njua (Qhua): Taag
Hmong Dou: Hangx
Hmong Dou (Qhua): Dangl
Hmong Bai (Qhua): Dangs
Large Flowery Miao (Qhua): Dangl
Small Flowery Miao (Qhua): Ke-Daok
Vietnam: Hạng, Hảng, Hạ
Latin: Hang, Ha, Tang, Saehang
Chinese: 項, 项
Thai: หาญ, แซ่หาญ
Lao: ?
xeem HAWJ (HER), qhua DUAG (DOUA)Pahawh:

Hmong Daw/Njua: Hawj
Hmong Daw (Qhua): Duag
Hmong Njua (Qhua): Dluag
Hmong Dou: Heux
Hmong Dou (Qhua): Hluas
Hmong Shi/Bai (Qhua): Dluas
Dongcun Miao (Qhua) Dluas
Large Flowery Miao (Qhua): Dlruas
Small Flowery Miao (Qhua): Lrab, Ke-Lrab
Vietnam: Hờ, Hầu
Latin: Her, Herr, Heu, Saeher
Chinese: 侯
Thai: เฮ้อ, แซ่เฮ้อ
Lao: ?
xeem KHAAB (KHANG), qhua PLUAS (PLOUA)Pahawh:

Hmong Daw: Khab
Hmong Njua: Khaab
Hmong Daw/Njua (Qhua): Pluas, Plua
Hmong Dou: Kangb
Hmong Bai/Shi (Qhua): Bluat
Large Flowery Miao (Qhua): Dlrat
Vietnam: Khang, Kháng, Khảng
Latin: Khang, Kha, Kang, Keng, Saekhang
Chinese: 康
Thai: ค้า, แซ่ค้า
Lao: ?
xeem KOO (KONG), qhua XOOM (SONG)Pahawh:

Hmong Daw/Njua: Koo
Hmong Daw/Njua (Qhua): Xoom
Hmong Dou/Bai: Gongt
Vietnam (Qhua): Sủng, Sũng, Sộng
Latin: Kong, Ko, Soung, Song, Saekong
Chinese: 龔, 宋
Thai: กง, แซ่กง
Lao: ?
xeem KWM (KUE), qhua NKWS (KUE)Pahawh:

Hmong Daw/Njua: Kwm
Hmong Daw/Njua (Qhua): Nkws
Hmong Dou: Guf
Hmong Dou (Qhua): Ngus
Hmong Shi (Qhua): Gguk
Hmong Bai (Qhua): Nguk
Dongcun Miao (Qhua): Nguk
Large Flowery Miao (Qhua): Nguk
Small Flowery Miao (Qhua): Ke-Ngub, Ke-Ngyk
Vietnam: Cư, Cứ
Latin: Kue, Ku, Kou, Saekue
Chinese: 古
Thai: กือ, แซ่กือ
Lao: ?
xeem LAUJ (LOR), qhua NRUA (DOUA) Pahawh:
Hmong Daw/Njua: Lauj
Hmong Daw/Njua (Qhua): Nruas, Tshib
Hmong Dou: Loux
Hmong Shi/Bai (Qhua): Ndrual
Vietnam: Lầu, Lò, Lồ
Latin: Lor, Lo, Lao, Lau, Saelor
Chinese: 劉
Thai: เลา, เล่า, แซ่เล่า
Lao: ລໍ່, ແຊ່ລໍ່
xeem LIS (LEE), qhua CAI (CHAI)Pahawh:

Hmong Daw/Njua: Lis
Hmong Daw/Njua (Qhua): Cai
Hmong Dou: Lik
Hmong Dou (Qhua): Jiet
Hmong Bai/Shi (Qhua): Jait
Dongcun Miao (Qhua): Jait
Large Flowery Miao (Qhua): Jait, Jaib
Small Flowery Miao (Qhua): Jet, Ke-Jet
Vietnam: Lý, Li, Ly, Lỳ
Latin: Lee, Ly, Le, Li, Saelee
Chinese: 李
Thai: ลี, แซ่ลี
Lao: ?
xeem MUAS (MOUA), qhua ZAAG (ZHANG)Pahawh:

Hmong Daw/Njua: Muas
Hmong Daw/Njua (Qhua): Zag, Zaag, Zaas
Hmong Dou: Muak
Hmong Dou (Qhua): Rangs
Hmong Bai (Qhua): Rangs
Large Flowery Miao (Qhua): Rangs, Rangf
Small Flowery Miao (Qhua): Raob, Ke-Raob
Vietnam: Mùa, Má
Latin: Moua, Mua, Saemoua
Chinese: 馬, 马
Thai: มัว, แซ่มัว
Lao: ມົວ, ແຊ່ມົວ
xeem PHAAB (PHANG), qhua PLUAS (PLOUA)Pahawh:

Hmong Daw: Phab
Hmong Njua: Phaab
Hmong Daw/Njua (Qhua): Pluas, Plua
Hmong Dou: Pangb
Hmong Bai/Shi (Qhua): Bluat
Large Flowery Miao (Qhua) Dlrat, Dlat
Vietnam: ?
Latin: Pha, Phang, Fang, Fa, Saepha, Saefang
Chinese: 潘
Thai: พ้า, แซ่พ้า
Lao: ?
xeem THOJ (THAO), qhua DUB (DUE)Pahawh:

Hmong Daw/Njua: Thoj
Hmong Daw (Qhua): Dub
Hmong Njua (Qhua): Dlub
Hmong Dou: Taox
Hmong Dou (Qhua): Hlob
Hmong Bai (Qhua): Dlob
Dongcun Miao (Qhua): Dlob
Large Flowery Miao (Qhua): Dlrub, Dlub
Small Flowery Miao (Qhua): Lrub, Ke-Lrub, Mvb Lrub
Vietnam: Thào, Đào
Latin: Thao, Thor, Tao, Toa, Saethao
Chinese: 陶
Thai: ถ้อ, ท่อ, แซ่ท่อ
Lao: ?
xeem VAAJ (VANG), qhua VWS (VUE)Pahawh:

Hmong Daw: Vaj
Hmong Njua: Vaaj
Hmong Daw/Njua (Qhua): Vws, Vus, Vug
Hmong Dou: Vangx, Wangx
Hmong Shi: Wangx
Hmong Bai (Qhua): Vos
Large Flowery Miao (Qhua): Dangl
Vietnam: Vàng
Latin: Vang, Va, Vaughn, Vong, Wang, Saevang
Chinese: 王, 汪
Thai: ว่า, หว้า, แซ่หว้า
Lao: ວັງ, ແຊ່ວັງ
xeem VWJ (VUE), qhua VWG (VUE)Pahawh:

Hmong Daw/Njua: Vwj
Hmong Daw/Njua (Qhua): Vwg
Hmong Dou: Wux, Vux
Large Flowery Miao (Qhua): Dlrub, Dlub
Small Flowery Miao (Qhua): Vvb, Ke-Vvb
Vietnam: Vừ, Vù, Vư
Latin: Vue, Vu, Vou, Saevue
Chinese: 吳
Thai: วื้อ, แซ่วื้อ
Lao: ວື່, ແຊ່ວື່
xeem XYOOJ (XIONG), qhua HMOB (HMO)Pahawh:

Hmong Daw/Njua: Xyooj
Hmong Daw (Qhua): Hmob
Hmong Njua (Qhua): Mob
Hmong Dou: Xongx
Hmong Dou (Qhua): Maob
Hmong Bai (Qhua): Hmaob
Dongcun Miao (Qhua): Maob
Large Flowery Miao (Qhua): Bwb
Vietnam: Sùng, Sằm, Sầm, Phùng, Nông
Latin: Xiong, Xong, Song, Saexiong
Chinese: 熊
Thai: ช่ง, โซ้ง, แซ่โซ้ง
Lao: ?
xeem YAAJ (YANG), qhua YAWG (YER)Pahawh:

Hmong Daw: Yaj
Hmong Njua: Yaaj
Hmong Daw/Njua (Qhua): Yawg
Hmong Dou: Yangx
Hmong Dou (Qhua): Yous
Hmong Bai (Qhua): Yeus
Dongcun Miao (Qhua): Yeuk
Large Flowery Miao (Qhua): Yeub
Small Flowery Miao (Qhua): Ke-Yeub
Vietnam: Giàng, Dương
Latin: Yang, Ya, Young, Saeyang
Chinese: 楊, 杨, 邓, 余
Thai: ย่า, ย่าง, แซ่ย่าง
Lao: ?