Are there any other apps apart from first-party apps that support this feature?

[SamarthBh]

The widgets on lockscreen:

[Livealone]

Kindly use Goodlock from Galaxy Store






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[Sayan_SS_]

Use Fine Lock(Lock Star Modeule).There You Will Get Every Widgets To Set it in Lock Screen

[Umangmathur]

Fine lock

[mHappiee]

KLCK ... If you want different widgets only, then KWGT