Poll Results

Golden Age Al Pratt (introduced in All-American Comics #19 back in 1940)

1. Aahz,
2. Assam,
3. married guy,
4. Zero Hunter

Ray Palmer (Silver Age Atom, first introduced in Showcase #34 in 1961)

1. a moment closer,
2. Adekis,
3. Air Wave,
4. Alphaxman,
5. Anodyne,
6. astro@work,
7. Atom Al,
8. Babylon23,
9. BatmanJones,
10. billee0918,
11. Blacula,
12. byrd156,
13. CaptainEurope,
14. CaptCleghorn,
15. Celgress,
16. ConnorHawke,
17. dancj,
18. Denirac,
19. dr-brainwave,
20. Dr. Poison,
21. Dr. Skeleton,
22. Dreaded Porcupine,
23. DrNewGod,
24. ERON,
25. etrumble,
26. Factor,
27. failo.legendkiller,
28. Flash Gordon,
29. Gamma022,
30. geoffpayne1992,
31. Gero4568,
32. Godlike13,
33. Güicho,
34. j9ac9k,
35. James Cameron,
36. jamgut,
37. Jekyll,
38. Jim Kelly,
39. JLH,
40. John Venus,
41. Johnny,
42. Jon Clark,
43. justinslot,
44. Kaijudo,
45. kcekada,
46. krazijoe,
47. Lightning Rider,
48. Lightning63,
49. M@Bowers2014,
50. MajorHoy,
51. md62,
52. Mike,
53. mikelmcknight72,
54. MRP,
55. Multiverse,
56. Nomads1,
57. oasis1313,
58. ozbourne,
59. Phantom Zone,
60. Robanker,
61. Sandy Hausler,
62. scary harpy,
63. Shadowcat,
64. Sirzechs,
65. SixSpeedSamurai,
66. SJNeal,
67. Skedatz,
68. Sutekh,
69. SwampyCA,
70. The Darknight Detective,
71. Thomas Crown,
72. Tony Stark,
73. Toreador,
74. Tzigone,
75. WallyWestFlash,
76. Will Evans,
77. witchboy

Adam Cray (introduced in Suicide Squad #44 in 1990; dies in Suicide Squad #61)

Ryan Choi (first appeared in DCU: Brave New World in 2006)

1. drbiii,
2. El_Gato,
3. Overhazard

Rhonda Pineda (aids JL in 2013's "Throne of Atlantis"; villainess Atomica from Earth 3)

Atom One Million (from the 853rd century; introduced in 2000's Hourman #11?)

New 52's Captain Al Pratt (introduced in Earth 2 #)

1. Earth-2 Refugee

other (please specify who/when in a separate post; no "Captain Atom" or "Atom Smasher", etc.)