1. Motown legend Lionel → RICHIE
7. Canadian gas brand → ESSO
11. Follower of Mac or Go in commercial names → PRO
14. Totally absorbed → ENRAPT
15. Classic ingredient in baby powder → TALC
16. Ingredient in a Tom Collins → GIN
17. Sorcery commonly associated with Haiti and New Orleans → VOODOOMAGIC
19. Dined → ATE
20. U.K. : H.M.R.C. :: U.S.A. : ___ → IRS
21. Molecule containing adenine, thymine, guanine and cytosine → DNA
22. Aid in tracking wildlife → EARTAG
24. Actor Buddy of "The Beverly Hillbillies" → EBSEN
26. Extra barrier to protect a house from bad weather → STORMDOOR
29. Flintstone with a red updo → WILMA
30. #2s in classrooms, for short → TAS
31. Certain something → AURA
32. Neither winning nor losing → TYING
34. Part of a hammer or a hawk → CLAW
37. Computer's storage space, for short → RAM
38. Traditional folk song that became a #1 hit for the Kingston Trio → TOMDOOLEY
41. K-pop band that went on hiatus in 2022 when their members went into military service → BTS
44. Dance bit → STEP
45. The masses, to Caesar → PLEBS
48. Infinitesimal amount → IOTA
50. Actress Vardalos → NIA
52. Like early PC graphics → LORES
54. Romantic options for a long-distance relationship → ZOOMDATES
57. Hindu deity known as the "Destroyer" → SHIVA
58. Many, many → ALOTOF
59. "As I see it," online → IMO
61. Up to, informally → TIL
62. "Notorious" Supreme Court justice → RBG
63. Engages in a dispiriting online activity ... or what
happens in this puzzle's shaded squares? → DOOMSCROLLS
67. TikTok star Addison ___ → RAE
68. Burrito bar offering, informally → GUAC
69. Hun leader who invaded Italy in A.D. 452 → ATTILA
70. Surgery sites, for short → ORS
71. Fraternal order since 1868 → ELKS
72. Samples, as soup → TASTES