Could clunking noise over bumps be caused by worn sway bar end links?

Most common cause. Cheap parts, easy DIY job.

Could clunking noise over bumps be caused by worn strut mounts or struts?

Clunk over every bump, sometimes with bouncing afterward.

Safety-critical — get inspected promptly.

Audible thunk over driveways, with vague steering.

Severity is rated Medium. Get a front-end inspection. Sway bar links are usually the first thing to fail and the cheapest fix.

Front-end clunking is almost always suspension wear.

Severity: Medium

Get a front-end inspection. Sway bar links are usually the first thing to fail and the cheapest fix.

Worn sway bar end links: Most common cause. Cheap parts, easy DIY job. Shop sway bar end links
Worn strut mounts or struts: Clunk over every bump, sometimes with bouncing afterward. Shop struts
Worn ball joints: Safety-critical — get inspected promptly. Shop ball joints
Worn control arm bushings: Audible thunk over driveways, with vague steering. Shop control arm