Here's the 40 largest ethnic, national, racial or tribal groups that we have information for so far of LA, NYC & Houston metros (2010 Census):
Los Angeles-Long Beach, CA CSA *These figures do not include the massive Armenian, Iranian, etc populations that LA has.
1 Mexican: 6,375,180
2 Black or African American alone: 1,245,186
3 Filipino alone: 505,578
4 Chinese (except Taiwanese) alone: 459,318
5 Salvadoran: 428,904
6 Hispanic or Latino (n.e.c. or generic responses) 385,243
7 Korean alone: 334,329
8 Vietnamese alone: 302,865
9 Guatemalan: 264,044
10 Asian Indian or East Indian alone: 152,595
11 Japanese alone: 148,929
12 Spaniard or Spanish: 104,091
13 Puerto Rican: 86,695
14 American Indian or Alaska Native tribes (not specified) 64,839
15 Cuban: 63,292
16 Taiwanese alone: 59,373
17 Peruvian: 53,727
18 Honduran: 53,524
19 Nicaraguan: 51,293
20 Cambodian (Khmer) alone: 44,277
21 Colombian: 42,417
22 Thai alone: 33,998
23 Argentinean: 31,524
24 Ecuadorian: 28,418
25 Mexican American Indian alone: 22,812
26 Samoan alone: 20,845
27 Pakistani alone: 19,869
28 Asian (not specified) 18,556
29 Indonesian alone: 17,703
30 American Indian tribes (n.e.c.) 15,577
31 Costa Rican: 14,976
32 Chilean: 13,152
33 Panamanian: 9,197
34 Laotian alone: 9,032
35 Native Hawaiian (Kānaka Maoli) alone: 8,804
36 Bolivian: 8,373
37 Guamanian or Chamorro (Chamoru) alone: 8,009
38 Sri Lankan alone: 7,124
39 Bangladeshi alone: 6,572
40 Cherokee (Tsalagi) alone: 6,539
Total Population: 17,877,006
New York, NY CSA *Keep in mind this does not include the massive Jamaican, Hatian, Trinidadian & other Caribbean Black populations that NY has or Guyanese, Brazilian, Nigerian, Arab, Ghanaian, etc populations as well.
1 Black or African American alone: 3,727,105
2 Puerto Rican: 1,373,911
3 Dominican (Dominican Republic): 863,400
4 Chinese (except Taiwanese) alone: 657,015
5 Mexican: 630,440
6 Asian Indian or East Indian alone: 573,329
7 Ecuadorian: 344,781
8 Hispanic or Latino (n.e.c. or generic responses) 304,976
9 Colombian: 248,588
10 Korean alone: 218,764
11 Salvadoran: 206,475
12 Filipino alone: 201,156
13 Cuban: 145,293
14 Peruvian: 145,153
15 Guatemalan: 131,244
16 Honduran: 107,241
17 Spaniard or Spanish: 87,118
18 Pakistani alone: 83,659
19 American Indian or Alaska Native tribes (not specified) 65,172
20 Bangladeshi alone: 63,069
21 Japanese alone: 48,487
22 Argentinean: 39,296
23 Vietnamese alone: 33,459
24 Costa Rican: 31,961
25 Panamanian: 31,105
26 Asian (not specified) 24,186
27 Taiwanese alone: 23,359
28 Chilean: 23,197
29 Venezuelan: 20,756
30 Nicaraguan: 19,609
31 Uruguayan: 17,536
32 Thai alone: 11,062
33 Bolivian: 10,461
34 Paraguayan: 8,001
35 South American Indian alone: 7,909
36 Nepalese alone: 7,320
37 Mexican American Indian alone: 6,999
38 Sri Lankan alone: 6,955
39 Indonesian alone: 5,955
40 Central American Indian alone: 5,091
Total Population: 22,085,649
Houston, TX CSA
1 Mexican: 1,601,318
2 Black or African American alone: 1,045,232
3 Salvadoran: 141,704
4 Hispanic or Latino (n.e.c. or generic responses) 126,309
5 Vietnamese alone: 104,106
6 Asian Indian or East Indian alone: 91,852
7 Chinese (except Taiwanese) alone: 65,857
8 Honduran: 53,721
9 Filipino alone: 39,606
10 Guatemalan: 38,215
11 Puerto Rican: 29,680
12 Pakistani alone: 29,452
13 Colombian: 28,980
14 Spaniard or Spanish: 25,592
15 American Indian or Alaska Native tribes (not specified) 22,210
16 Cuban: 19,223
17 Korean alone: 14,796
18 Venezuelan: 12,501
19 Nicaraguan: 9,518
20 Peruvian: 8,617
21 Asian (not specified) 6,577
22 Argentinean: 6,564
23 Taiwanese alone: 6,213
24 Ecuadorian: 5,036
25 Dominican (Dominican Republic): 4,987
26 Japanese alone: 4,836
27 Mexican American Indian alone: 4,691
28 Cambodian (Khmer) alone: 4,625
29 Panamanian: 3,368
30 Cherokee (Tsalagi) alone: 2,904
31 Thai alone: 2,857
32 Costa Rican: 2,731
33 Bangladeshi alone: 2,696
34 Chilean: 2,572
35 Bolivian: 2,366
36 Laotian alone: 1,989
37 Indonesian alone: 1,789
38 Burmese alone: 1,635
39 Uruguayan: 1,608
40 Choctaw alone: 1,549
Total Population: 6,051,363
....you decide