Not exactly, since all host minds were fabricated not transferred, similar, but not the same. It remains to be seen if a human mind can be shifted onto the host platform. But the narrative push going forward looks like it's going to be the usual AI vs. Humanity, plus the usual AI existential crisis.
Besides both having a theme park and politicking for control of same, the only thematic similarity between Down & Out and Westworld is the "Hey, people are kinda shitty" message.
The infomorph resleeving is a bit rarer, but you can find it in a few other places. The Takeshi Kovacks series, Stross' Accelerando, & Glasshouse, Eve Online's Dust 514/Templar One & Valkyrie, the Eclipse Phase TTRPG. afaik, Eclipse Phase is really the only one that has Human and AI together, but that's more because it's the transhumanist kitchen sink than anything.
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