If it could only be what lights are currently being offered, knowing what I know I'd head to Home Depot and buy Maglites. A 2c ML25, 3D ML300, a 2aaa minimag and a Solitaire.
Later I would buy 2 Elzetta Bones, a Bravo with hi/lo and an Alpha 415 with hi/lo.
Then I would get on the open web and find some of those PK Design Lab lights from 2014-2016, then some Pentagon classics. Maybe some incan E2's and at least one A2 with that ugly white LED ring.
Eventually I would probably go to eBay and find some Kel-Lites from the 70's a couple of SureFire G2x Pro 320's and some vintage lights from the 1920's forward and eventually end up with several hundred old light bulbs.
And definitely at least 3 Fenix E01's. If I had any money left a Malkoff MD2 hi/lo.
My Daily carry would still be a triple a light in one trouser pocket and a 1x123 in the other with a 2x123 near me.