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An olympic bar & plates is a good start.
That covers deadlifts, rows, overhead press, lunges, curls etc...
A bench then gives you chest presses.
(A fancy bench would give you extension exercises like leg, back, calf raise etc...)
A modular dumbell set would give you arms and accessory lifts.
You've enough space for all of the things though, like a rack and lifting floor.
A rack would give you pull ups and cable exercises if you get the right type.
You probably don't need bumper plates, but 1) they mean the bar is at the same height on the floor with any plate, which is useful for warm ups, 2) you could use them for their intended purpose, and 3) you can get them in different colours.
Suggestions for some basic weights for home use for deadlift, rows, etc. What to buy? How much to spend or just go to Facebook marketplace and buy something unused from someone who got all excited at the onset of lockdown?