Technically most moves are unsafe on shield that's true. Ffamram asked about endlag (although I guess he wanted to talk about falco), not what's safe on shields so I meant U/Fsmash don't have horrible endlag (as in lag after the hitbubbles end) but if they wiff they are very laggy. Where Zelda's landing lag and specials have bad endlag.
Sorry I don't really see the usefulness in making a distinction between end lag frames and not talking about how safe/unsafe they are on whiff and shield.
But let's look at her frame data.
Jab hits on 11, 13, 15 with a FAF of 24 = 9 frames of end lag
Dash attack hits on 6-10 with a FAF of 39 = 29 frames of end lag
Forward tilt hits on 12-13 with a FAF of 40 = 27 frames of end lag
Down tilt hits on 5-11 with a FAF of 25 = 14 frames of end lag
Up tilt hits on 7-18 with a FAF of 33 = 15 frames of end lag
Forward smash hits on 16, 18, 20, 22, 24 with a FAF of 50 = 26 frames of end lag
Down smash hits on 5-6 & 13-14 with a FAF of 41 = 27 frames of end lag
Up smash his on 9, 11, 13, 15, 25, 27, 29, 32 with a FAF of 64 = 32 frames of end lag
N-air hits on 6-7, 10-11, 14-15, 18-19, 22-23 with a FAF of 51 = 28 frames of end lag (and 22 frames of landing lag)
Forward Lightning Kick hits on 9-13 with a FAF of 53 = 40 frames of end lag (23 frames of landing lag)
Back Lightning Kick hits on 6-9 with a FAF of 53 = 44 frames of end lag (25 frames of landing lag)
D-air hits on 14-24 with a FAF of 45 = 21 frames of end lag (21 frames of landing lag)
"Finger bang" hits on 14-16 with a FAF of 55 = 39 frames of end lag (22 frames of landing lag)
Standing grab hits on 10-11 with a FAF of 38 = 27 frames of end lag
Dash grab hits on 11-12 with a FAF of 47 = 35 frames of end lag
Pivot grab hits on 11-12 with a FAF of 44 = 32 frames of end lag
We know her specials are super laggy.
She only has
3 moves that have less than 20 frames of end lag (and only one with less than 10 frames).
Not counting her specials, she has 13 moves with 20+ frames of end lag, 6 moves with 30+ frames of end lag, and 2 moves with 40+ frames of end lag (which increases if we include her specials)
Any way you look at it, her end lag is atrocious.