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I don't think there is anything wildly wrong with it, but it seems like you're doing all of this at the router, unless you have dedicated switches for each VLAN?
VLAN is not a security feature, it's a logical separation of IP segments. Maybe I'm missing your intention here, but just setting different IP spaces on VLANs and then bridging them doesn't help your security, it just complicates your network.
Not OP, but logical separation and firewall rules is a needed first step for security. They already mentioned in the post that one vlan has dedicated outbound (via VPN only) and doesn't have access to their .200.
Physical switches per vlan is completely unnecessary, and entirely why vlans are used rather than subnets.
You can't use the same subnet on different vlans if you ever intend for both of them to reach the internet. In that case you'd need a second router which just defeats the purpose
They are all defined as 192.168.x.y/24 Doesn't this make them in different subnets?
Yes.
And to be clear about things, because that comment doesn't make any sense for VLANs - a VLAN can contain multiple subnets. You will not have a single subnet across multiple VLANs.
Your config is fine in that regard.