ABCDEFGHIJ
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Here is the current data set to work with.
A:B - List of names in two columns.
D - Required format when CONCAT is performed.		RESULTS: Using a single array formula, I would like to conditionally CONCAT Col A (Name1), and Col B (Name2), and seperate using "_" delimiter in Col F. The condition being that it must CONCAT based on the "Valid Name Formats helper Col D."LEGEND
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2 Columns with namesValid Name FormatsName not found in column D
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Name 1Name 2First Last OR First Last_First LastMy Current Formula (Does not work)Expected ResultsName found in column D, but incorrect format. Should be Name 2_Name1
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Michelle RobinsonJulie MorganAdam Coleman_Virginia MartinMichelle Robinson_Julie MorganJulie Morgan_Michelle RobinsonName found in column D
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James BaileyJacqueline BarnesAlan Flores_Gary WilliamsJames Bailey_Jacqueline BarnesJames Bailey_Jacqueline Barnes
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Joe HernandezKathleen WilsonAmy Coleman_Janet HallJoe Hernandez_Kathleen WilsonJoe Hernandez_Kathleen Wilson
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Gary WilliamsAlan FloresCheryl Williams_Cheryl MooreGary Williams_Alan FloresAlan Flores_Gary Williams
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Michelle RobinsonTammy PerezDavid Murphy_Doris JenkinsMichelle Robinson_Tammy PerezTammy Perez_Michelle Robinson
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John ThomasCatherine PerryDiana Wilson_Alice HughesJohn Thomas_Catherine PerryJohn Thomas_Catherine Perry
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Amy ColemanJanet HallDiana Wilson_Betty GonzalesAmy Coleman_Janet HallAmy Coleman_Janet Hall
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Gerald SimmonsEugene Rodriguez_Norma ClarkGerald SimmonsGerald Simmons
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Virginia MartinJoe TaylorFrances ClarkVirginia Martin_Joe TaylorVirginia Martin_Joe Taylor
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Cheryl MooreCheryl WilliamsGerald SimmonsCheryl Moore_Cheryl WilliamsCheryl Williams_Cheryl Moore
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Susan CampbellVictor RobertsHarold White_Tina TorresSusan Campbell_Victor RobertsSusan Campbell_Victor Roberts
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David MurphyDoris JenkinsHeather Garcia_Keith LeeDavid Murphy_Doris JenkinsDavid Murphy_Doris Jenkins
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Virginia MartinJames Bailey_Jacqueline BarnesVirginia Martin
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Diane KingMaria SanchezJane Evans_George HowardDiane King_Maria SanchezMaria Sanchez_Diane King
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Virginia MartinAdam ColemanJoe Hernandez_Kathleen WilsonVirginia Martin_Adam ColemanAdam Coleman_Virginia Martin
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Jane EvansGeorge HowardJohn Thomas_Catherine PerryJane Evans_George HowardJane Evans_George Howard
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Robert GreenJohnny Kelly_Diana WilsonRobert GreenRobert Green
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Heather GarciaKeith LeeJulie Morgan_Michelle RobinsonHeather Garcia_Keith LeeHeather Garcia_Keith Lee
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Tina TorresHarold WhiteMaria Sanchez_Diane KingTina Torres_Harold WhiteHarold White_Tina Torres
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Diana WilsonBetty GonzalesRobert GreenDiana Wilson_Betty GonzalesDiana Wilson_Betty Gonzales
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Eugene RodriguezNorma ClarkShirley Simmons_Evelyn SanchezEugene Rodriguez_Norma ClarkEugene Rodriguez_Norma Clark
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Frances ClarkSusan Campbell_Victor RobertsFrances ClarkFrances Clark
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Evelyn SanchezShirley SimmonsTammy Perez_Michelle RobinsonEvelyn Sanchez_Shirley SimmonsShirley Simmons_Evelyn Sanchez
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Diana WilsonAlice HughesVirginia Martin_Joe TaylorDiana Wilson_Alice HughesDiana Wilson_Alice Hughes
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Diana WilsonJohnny KellyDiana Wilson_Johnny KellyJohnny Kelly_Diana Wilson
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