Here is GU16-17 as of 2/28/19. Numbers checked now (and I have edited this post to make a few minor corrections). Let me know what age group you want to see next!
Legends is having another good year. And Solar's goal differential is INSANE (two players with 26 goals apiece, both 2003's).
Note, some win/loss records are different because I included the Arlington team's games in my RPI even though DA didn't record those 3 games as official games.
Rank Club (W-L-T) GD = total goal differential
1 Solar Soccer Club (19-0-1) PCT: 0.975 OPP: 0.5696 OPOP: 0.544 RPI: 0.6645 GD: 94
2 Tophat (10-2-2) PCT: 0.7857 OPP: 0.6029 OPOP: 0.5098 RPI: 0.6253 GD: 27
3 Legends FC (16-1-1) PCT: 0.9167 OPP: 0.5295 OPOP: 0.5252 RPI: 0.6252 GD: 37
4 NC Courage (8-3-3) PCT: 0.6786 OPP: 0.6138 OPOP: 0.5157 RPI: 0.6055 GD: 15
5 Charlotte Soccer Academy (10-4-2) PCT: 0.6875 OPP: 0.5991 OPOP: 0.5093 RPI: 0.5988 GD: 6
6 Penn Fusion Soccer Academy (11-1-2) PCT: 0.8571 OPP: 0.4985 OPOP: 0.5091 RPI: 0.5908 GD: 30
7 FC Dallas (12-3-4) PCT: 0.7368 OPP: 0.5414 OPOP: 0.5335 RPI: 0.5883 GD: 23
8 Lonestar SC Academy (12-4-1) PCT: 0.7353 OPP: 0.5396 OPOP: 0.5289 RPI: 0.5858 GD: 24
9 Beach Futbol Club (12-4-3) PCT: 0.7105 OPP: 0.5553 OPOP: 0.5192 RPI: 0.5851 GD: 13
10 SPORTING Blue Valley (9-3-2) PCT: 0.7143 OPP: 0.5236 OPOP: 0.5304 RPI: 0.573 GD: 20
11 Dallas Texans (9-5-1) PCT: 0.6333 OPP: 0.563 OPOP: 0.53 RPI: 0.5723 GD: 3
12 Midwest United FC (8-2-3) PCT: 0.7308 OPP: 0.5179 OPOP: 0.509 RPI: 0.5689 GD: 22
13 Crossfire Premier (9-3-3) PCT: 0.7 OPP: 0.5123 OPOP: 0.5088 RPI: 0.5583 GD: 21
14 Sockers FC (8-1-5) PCT: 0.75 OPP: 0.4666 OPOP: 0.5116 RPI: 0.5487 GD: 16
15 San Diego Surf (8-3-5) PCT: 0.6563 OPP: 0.4988 OPOP: 0.5104 RPI: 0.5411 GD: 10
16 Real Colorado (7-5-2) PCT: 0.5714 OPP: 0.5326 OPOP: 0.5276 RPI: 0.5411 GD: 5
17 Utah Royals FC- Arizona (9-6-2) PCT: 0.5882 OPP: 0.528 OPOP: 0.5132 RPI: 0.5394 GD: 8
18 So Cal Blues Soccer Club (11-6-6) PCT: 0.6087 OPP: 0.515 OPOP: 0.5084 RPI: 0.5368 GD: 11
19 California Thorns FC (8-6-4) PCT: 0.5556 OPP: 0.5287 OPOP: 0.5239 RPI: 0.5342 GD: -2
20 New York City FC (10-3-1) PCT: 0.75 OPP: 0.4494 OPOP: 0.4833 RPI: 0.533 GD: 30
21 LA Galaxy San Diego (9-8-4) PCT: 0.5238 OPP: 0.5412 OPOP: 0.5218 RPI: 0.532 GD: 1
22 United Futbol Academy (7-9-0) PCT: 0.4375 OPP: 0.5848 OPOP: 0.5117 RPI: 0.5297 GD: -15
23 OC Surf Soccer Club (7-8-2) PCT: 0.4706 OPP: 0.5697 OPOP: 0.5039 RPI: 0.5285 GD: -1
24 San Jose Earthquakes (6-7-5) PCT: 0.4722 OPP: 0.5657 OPOP: 0.5068 RPI: 0.5276 GD: 1
25 Cincinnati Development Academy (9-4-1) PCT: 0.6786 OPP: 0.4524 OPOP: 0.5118 RPI: 0.5238 GD: 17
26 Nationals (8-5-2) PCT: 0.6 OPP: 0.4904 OPOP: 0.4952 RPI: 0.519 GD: 17
27 FC United Soccer Club (7-3-3) PCT: 0.6538 OPP: 0.446 OPOP: 0.5184 RPI: 0.5161 GD: 2
28 SC del Sol (7-9-6) PCT: 0.4545 OPP: 0.5461 OPOP: 0.5112 RPI: 0.5145 GD: -1
29 Reign Academy (5-4-6) PCT: 0.5333 OPP: 0.509 OPOP: 0.4909 RPI: 0.5106 GD: 4
30 Oakwood Soccer Club (9-5-0) PCT: 0.6429 OPP: 0.4497 OPOP: 0.4749 RPI: 0.5043 GD: 25
31 FC Fury NY (7-5-1) PCT: 0.5769 OPP: 0.4769 OPOP: 0.4706 RPI: 0.5003 GD: 9
32 NEFC (7-6-2) PCT: 0.5333 OPP: 0.4957 OPOP: 0.4691 RPI: 0.4985 GD: 4
33 Michigan Jaguars FC (4-6-4) PCT: 0.4286 OPP: 0.5302 OPOP: 0.487 RPI: 0.494 GD: -6
34 LA Galaxy (6-8-3) PCT: 0.4412 OPP: 0.4973 OPOP: 0.5082 RPI: 0.486 GD: -4
35 IMG Academy (7-6-3) PCT: 0.5313 OPP: 0.4555 OPOP: 0.4888 RPI: 0.4828 GD: 9
36 Real So Cal (8-6-3) PCT: 0.5588 OPP: 0.4298 OPOP: 0.5061 RPI: 0.4811 GD: 8
37 La Roca Futbol Club (5-7-4) PCT: 0.4375 OPP: 0.4965 OPOP: 0.4891 RPI: 0.4799 GD: -4
38 FC Virginia (6-7-3) PCT: 0.4688 OPP: 0.475 OPOP: 0.4961 RPI: 0.4787 GD: -2
39 Sporting Omaha (4-9-0) PCT: 0.3077 OPP: 0.5406 OPOP: 0.5141 RPI: 0.4757 GD: -19
40 Los Angeles Premier Futbol Club (5-8-2) PCT: 0.4 OPP: 0.4954 OPOP: 0.4873 RPI: 0.4695 GD: -10
41 Sky Blue - NYSC (7-5-1) PCT: 0.5769 OPP: 0.4078 OPOP: 0.4807 RPI: 0.4683 GD: 24
42 Eagles Soccer Club (4-10-3) PCT: 0.3235 OPP: 0.5174 OPOP: 0.4971 RPI: 0.4639 GD: -5
43 CSA Impact (3-8-3) PCT: 0.3214 OPP: 0.5225 OPOP: 0.4754 RPI: 0.4604 GD: -11
44 Lamorinda Soccer Club (4-8-5) PCT: 0.3824 OPP: 0.477 OPOP: 0.4894 RPI: 0.4565 GD: -12
45 South Florida Football Academy (3-6-5) PCT: 0.3929 OPP: 0.4671 OPOP: 0.4936 RPI: 0.4552 GD: -7
46 Placer United Soccer Club (6-9-2) PCT: 0.4118 OPP: 0.4498 OPOP: 0.4889 RPI: 0.4501 GD: -12
47 Houston Dash (4-12-1) PCT: 0.2647 OPP: 0.4959 OPOP: 0.5185 RPI: 0.4438 GD: -20
48 Colorado Rush (2-12-0) PCT: 0.1429 OPP: 0.5535 OPOP: 0.5164 RPI: 0.4415 GD: -47
49 Cedar Stars Academy - Monmouth (4-5-1) PCT: 0.45 OPP: 0.4237 OPOP: 0.4663 RPI: 0.4409 GD: 2
50 PA Classics (3-4-3) PCT: 0.45 OPP: 0.4149 OPOP: 0.481 RPI: 0.4402 GD: 7
51 Pateadores (5-11-4) PCT: 0.35 OPP: 0.4479 OPOP: 0.5076 RPI: 0.4383 GD: -13
52 West Florida Flames (3-8-5) PCT: 0.3438 OPP: 0.4477 OPOP: 0.4878 RPI: 0.4317 GD: -17
53 Portland Thorns FC (3-9-4) PCT: 0.3125 OPP: 0.4537 OPOP: 0.483 RPI: 0.4258 GD: -13
54 Oklahoma Energy FC (4-13-0) PCT: 0.2353 OPP: 0.4661 OPOP: 0.5307 RPI: 0.4245 GD: -36
55 Albion SC (4-13-2) PCT: 0.2632 OPP: 0.4672 OPOP: 0.4827 RPI: 0.42 GD: -24
56 Shattuck - St. Mary's (1-15-1) PCT: 0.0882 OPP: 0.5471 OPOP: 0.4763 RPI: 0.4147 GD: -44
57 Weston FC (4-9-3) PCT: 0.3438 OPP: 0.4093 OPOP: 0.4893 RPI: 0.4129 GD: -23
58 Seacoast United (3-9-1) PCT: 0.2692 OPP: 0.4601 OPOP: 0.4589 RPI: 0.4121 GD: -14
59 FC Albertson Fury (2-10-1) PCT: 0.1923 OPP: 0.4539 OPOP: 0.4575 RPI: 0.3894 GD: -31
60 Empire United (1-11-2) PCT: 0.1429 OPP: 0.4639 OPOP: 0.4331 RPI: 0.376 GD: -59
61 United Soccer Alliance (2-9-2) PCT: 0.2308 OPP: 0.408 OPOP: 0.4543 RPI: 0.3753 GD: -21
62 Washington Spirit Academy - Maryland (1-8-1) PCT: 0.15 OPP: 0.4157 OPOP: 0.4521 RPI: 0.3584 GD: -25
63 Washington Spirit Academy - Virginia (0-12-1) PCT: 0.0385 OPP: 0.4408 OPOP: 0.4545 RPI: 0.3436 GD: -45
64 Arlington Soccer Association (1-2-0) PCT: 0.3333 OPP: 0.2123 OPOP: 0.4463 RPI: 0.3011 GD: -3
All SW division teams highlighted in red
Division Average RPI Rankings
1 Frontier - Central Division 0.5311
2 Southwest - West Division 0.5115
3 Mid-America - Central Division 0.5057
4 Southeast - East Division 0.5019
5 Northwest - West Division 0.4929
6 Northeast - East Division 0.4602
7 Atlantic - East Division 0.4220