What is the best alternative to Shortcuts (Quick Open) on iPhone?

Blank Spaces Launcher, S tier, #1 in app launching.

Is there a free alternative to Shortcuts (Quick Open)?

Yes: Blank Spaces Launcher (S tier, #1) is free to download, with in-app purchases.

Yes. 5 apps rank above it in app launching: Blank Spaces Launcher (#1), Lock Launcher - Launch Apps (#2), Dumb Phone (dp) (#3) and more.

Shortcuts (Quick Open) is F tier, #6 of the 6 tiered apps in app launching. Here is everything that competes with it on iPhone, in tier order.

1
Blank Spaces LauncherShigher tier
Free + IAP · ★ 4.6 · 11,273 ratings · score 93
Minimalist iPhone launcher that replaces home screen icons with a plain text list of chosen apps and blocks distracting.
2
Lock Launcher - Launch AppsShigher tier
Free + IAP · ★ 4.7 · 5,540 ratings · score 93
Lock screen and home screen widget that launches apps, websites, shortcuts and custom URL schemes with one touch.
3
Dumb Phone (dp)Shigher tier
Free + IAP · ★ 4.6 · 5,532 ratings · score 91
Replaces iPhone Home Screen app icons with a minimalist launcher of simple buttons for chosen essential apps.
4
Minimalist LauncherShigher tier
Free + IAP · ★ 4.6 · 5,215 ratings · score 91
A minimal home screen launcher for iOS that aims to reduce distraction and screen time by showing only essential apps.
5
Launcher with Multiple WidgetsAhigher tier
Free + IAP · ★ 4.5 · 16,636 ratings · score 91
One-tap widgets for apps, contacts, shortcuts and actions on Home Screen, Lock Screen, Dynamic Island and Apple Watch.

What is the best alternative to Shortcuts (Quick Open) on iPhone?: Blank Spaces Launcher, S tier, #1 in app launching.
Is there a free alternative to Shortcuts (Quick Open)?: Yes: Blank Spaces Launcher (S tier, #1) is free to download, with in-app purchases.
Does anything rank above Shortcuts (Quick Open)?: Yes. 5 apps rank above it in app launching: Blank Spaces Launcher (#1), Lock Launcher - Launch Apps (#2), Dumb Phone (dp) (#3) and more.