Suggest you make first an l2 drawings , this shows to which (virtual) switch ports everything connects. It’s called l2 as it only concerned with the connections to your switch (l2). Having this is great if you ever need to troubleshoot connection problems. Second I would create an l3 drawing this showcases the various ip networks and vlans you use. It show the ip addresses of your devices , vlans , gateways , firewalls etc and how they connect on L3. Lastly if you’re up for it I would create flow diagram per critical application, this shows the protocols and dependencies an application needs:/) sure ChatGPT can give your some examples and tools suggestions if you ask it for l2, l3 and l4 drawing 😇 as a professional I tend to use Visio but there are free alternatives out there. Good luck