new small issue/confirmation : regarding ground, it is best to have one point for all ground right? meaning if chassis of one device is grounded and the whole sheet is grounded, I should not wire the ground connections of other devices if they also ground their chassis right?

illustration:
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in first photo you can see I have connected the power supply chassis to ground wire which goes back to main ground point ( distribution terminals ) so the whole back is grounded. in second photo VFD and power line filter have earth connections but by checking continuity test already these points are connected to back also. so should I skip connecting ground wire to them?

thank you!