If we take a look at sh. Maitha's mom, if we look at the month & date of the year, she gave birth to sh. Maitha's long before sh. Hind gave birth to sh. Hessa in 1980 too. This indicate that she's probably i said probably the first wife.......
No, idea about the mother of sh. Wejdan who reportedly born in 79 & the mother of sh. Mo's eldest son who was born before his younger siblings even exist and after sh. Manal.
If I arrange all sources about Mohammed bin Rashid's marriage, then...
The Wives:
Randa Al Banna (lebanese): married from 1972 to 1978, child- Manal
German Woman - married in 1974/1975 child - Marwan. I guess divorce happened in late 70s/ early 80s and Marwan was raised by his mom. If his mom didn't raise him, then its Sheikha Hind who groomed.
Houria Ahmed Al Mash(algerian): married in 1978/1979 and divorce happened in late 80s
Mother of - Maitha (1980), Shamsa(1981), Latifa'2 (1985), Majid (1987). They were raised by Fatima bint Rashid.
Sheikha Hind: married in 1979 has 12 children. Eldest child is Hassa, born in november 1980. [She was 2nd/3rd wife at that time]
Delila Aloula (lebanese): mother of Latifa'1 (1983). No source to say much about her. I wonder if Wejdan is also her daughter, they look partially similar to me. If she had latifa'1, then i think marriage span was from 1982 to 1985. Latifa1 was raised by Hessa/ Shaikha bint Rashid.
Pauline Abi Rached (lebanese): They were married from 1986 to 1992. I m sure about divorce year. She left dubai while she was pregnant with Suhail. Suhail was born in 1992. Suhail is with his mother. Pauline is mother of Maryam 1 and Mansoor. Later they were raised by Fatima bint Rashid.
Zoe Grikorakos (Greek): She got married in early 90s and they had Mahra (1994). After divorce, mahra was raised by her mother. Few years ago, She returned to Dubai. But I saw Zoe hugging Sheik Moh. (Though he seemed uncomfortable) Those are about just few years ago. I cant find the clue.
Mother of Haya: an emirati woman with surname Al Muttawa/ Al Muthana. Haya was born in 2000. Haya lives with her mother. I think they are still married and the marriage happened in 1999/2000.
Princess Haya: married between 2004 to 2019.
Mother of Al Jalila and Zayed.
Mother of Dalal: probably Dalal is in her late 20s or early 30s. Cant say much about her mother.
Mother of Wejdan: Wejdan was born in february 1979, raised by Hind. Can't say much
I m not sure if Dalal or Wejdan has any full siblings who come from same mother. If Dalal has any, then it will be Haya.
Moreover, unmarried half siblings of Hamdan live in Zabeel except Haya and Mahra.
*Some points are based on speculations*