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I was limited by lockdown availabilities - but I bought this set - https://spartangymgear.co.uk/collections/weight-plates/products/olympic-bar-weights-set (plus and extra pair of 20s and a set of microplates) and it has done the job pretty well. I've been going to a gym again since they reopened, but it was good when using it / on deload weeks when I cba to walk to the gym for a 40 minute workout. I've also ordered stuff from Mirafit and they seem decent.
Depending on experience level, just make sure it's a bar with collars that spin (pref with a bearing) and it'll be fine.
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.